How many 3rd party aircraft do you have installed? Too many aircraft is the common cause of this problem. http://www.simviation.com/lair/cfs2faq.htm
In my experience, scenery should not cause error messages - providing you install it correctly & activate via the Scenery Library. http://www.simviation.com/lair/cfs2scenclinc.htm

To use imported airfields in the MB they will need adding to airbases.dat. http://www.simviation.com/lair/Scene2MbDb.html

Quote:

Not to my knowledge. There is a limit to the number of new areas you can add to Scenery.cfg but this should not cause errors. Any conflicts should be easy enough to fix - providing you installed all your 3rd party scenery separately & activated it via the Scenery Library. Simply go to the Scenery Library & deactivate the suspect area. When you identify a problem area, delete it from the Scenery Library before removing the files. If you pasted BGL files direct to the Scenery folder you could have a problem. The only answer might be a complete Uninstall/Install of CFS2.

Dick You're right that our memories are weak. Mine is getting worse by the day. LOL
Providing you installed all your 3rd party scenery separately & activated via the Scenery Library there should be no problems. The conflicting area can then be tracked down by de-activating areas systematically from the Scenery Library. The problem arises if you paste BGL files direct to the CFS2\Scenery folder or unzip downloaded scenery direct to the sim. This makes it difficult to remember file names or know exactly where to find them. It's also possible that the database is actually corrupt as shown by the error message.

The best way out in your case might be a duplicate install of CFS2. You obviously need enough free space on your HD.
To do this, simply rename the existing CFS2 root directory folder to any other name.
Then insert the CD & install in the usual way.
You will now have two separate versions of CFS2 which will run independently. Use the original install as a backup. You can transfer the files/folders you know are working properly. Things like gauges should be OK. When you're done it's safe to delete the complete directory folder for the original.

PS. You can have as many duplicate installs as you wish, providing there's enough space on your HD. Many people I know run several separate versions of CFS2, for example - CFS2 Europe, CFS2 Pacific & CFS2 Jets.

Thanks Hagar and Mathias for your valuable tips.
Hagar: if your memory goes down by the day, it must have been of  "inhuman" proportions a
couple of years ago, measured against this huge amount of sim things you still remember
today! I read about the duplicates in the forum and I just came to the conclusion to try a
duplicate install when I found your messages.
Since Mathias' clever idea is less effortful I tried it first, but unfortunately without success.
Let's track it down. I think the problem A&P and I experience has to do with the scenery.
A&P used only the stock aircraft and I have no more than 60 aircraft active.
Moreover, I followed Hagar's tut-advice and removed 5 aircraft, again without succes. I had
several 3rd party sceneries installed that worked fine. So the problem is not just installing 
imported sceneries, but maybe the way in which it was installed. I also remember (just lucky)
the things that I did not do. I didnot pasteBGL files directly to the CFS2\Scenery folder nor did I
unzip downloaded scenery directly to the sim. The problem of A&P may lie here, he says he
tested it by copy and pasting into the scenery folder.
I also remember (again just lucky I guess) I had erroneously installed and activated 2 mesh
sceneries with the same name ( "java-mesh") from different folders (ADDON/java-mesh andSCENERYDB/java-mesh) at 2 different layers (1 and 17). Here's a weak spot: I dont
remember whether I flew with this duplicate messh or immediately de-activated and deleted the
duplicate. The last thing I remember (really!) is that I had installed and activated 2 mesh
sceneries in a single Scenery Library session. Hagar: what do you mean with "you installed all
your 3rd party scenery separately"? In separate Scenery Library sessions or in separate folders?
If the second is correct, my mistake of having same-name/different folder sceneries installed
could be the problem. Anyway: does this ring a bell?
The idea of independent CFS2 versions is intriguing, I didnot know CFS2 has that far developed... I will duplicate independently of this misty data base problem and do some tests
on it. How do you select the CFS2 version you wanna play with? By interchanging the root-folder
names?
Nice ideas guys, thanks alot!

Hi Hagar and others interested. Our memories are weak, but mine..... Well, I found out why I got the data base corruption error. It had nothing to do with number of aircraft or faulty scenery installation. It resulted from 3rd party ship dp files with which I replaced the original ship dp's.
As Hagar advised I made a fresh duplicate CFS2 install. Next, I installed the 3rd party mesh and other scenery in the fresh CFS2 install and tested it. Everything worked perfect. Then I imported my 3rd party effects and aircraft in the fresh install. Again, everything worked perfect. Finally, I imported into the fresh install the complete ships folder from my old install, and WHAM, the data base corruption error was there. After replacing these faulty ships with the original ones, the error disappeared and in the fresh install everything worked perfect again. Also, after replacing the ships in the old install with the stock ships, the old install also worked perfect again! I only then remembered that I had been replacing ship dp files in the same session in which I installed 3rd party scenery. Memories..... The lesson of this might be: "Thou shall test, not just remember", or better: "Thou shall test and only then remember".
I then wondered what was wrong in the ships folder: some 3rd party ships I imported, or the 3rd party dp files that I had used to replace the original ones with. So I imported the 3rd party ships with their own dp files in the fresh install. Everything worked fine. Then I replaced the dp files of these ships with the ones I downloaded from a third party, and there it was again: the data base corruption error. After overwriting the new ship dp files with the original ones, everything was fine again.
Ever heard of this before? The 3rd party source of the dp files that cause the error  seems reliable to me, so I wonder whether this is a problem specific to Win-XP, like the aircraft MDL problem.
Well, I hope this may help others with the same problem.
See you later.

Hagar, you wrote:
"I suspect having the same area (java-mesh) activated twice from 2 different locations might cause some sort of conflict. This would not usually be possible as the Scenery Library will not accept it." I found itt really did accept the install and activation, but as said before, I dont remember whether I flew with it or deleted the entry after recognizing my error.

Hagar: I know that one has to delete CDP's after changing the DP's, and I usually do, but, you know, sometimes one forgets ....
So I deleted all CDP's I could find of the ships in the ships-folder causing the error, next renamed the SHIPS folder (to SHIPS-Correct) and renamed the SHIPS-Corrupt folder to SHIPS, and then ran CFS2 free flight. Unfortunately without succes, the error still occurred.
The CFG files in the SHIPS folder were never changed, so it all points to the DP's, dont you think?

Hagar: I was wrong about the CFG files. First, I imported the ships developed by the PHP Team. I then replaced the CFGs and DPs of the ships with the ones by Blade-etal (CFS2Bladeeffectcollv2). I tested this with the fresh install: no problems. Next, I replaced only the DPs with those from AF_ShipDPPackage-1. After this, the data base corruption occurs. My guess: the AF DPs may require the stock CFGs, so a conflict arises because the stock CFGs were changed.

Dick. I tracked down the effects package you mentioned. One look was enough for me. Some of those files look strangely familiar. As I mentioned before, I no longer trust 3rd party FX tweaks & steer well clear of them. It's just not worth the hassle. IMHO

Figured out the problem. You were correct to many aircraft. I opened the aircraft folder and counted a total of 92 aircraft folders. 3 folders contain a total of 18 aircraft. gives me a total of 100 aircraft. I  used Martin Writes Hangar. Creating sub Hangars, German, Japan, USAAC, NAVY, USMC, Bombers, stored the aircraft files into the hangars and this cured the problems.

But I like the Idea of doing multiple instals of CFS_2 Stock, CFS_2 Europe. CFS_2 Modified

There should be a way to re program CFS_2 to overcome the 100 plane limit?

Since you can use as many aircraft in CFS_1 and FS_2000 it should be possible to exceed 100 in CFS_2.

HAGAR AND DICKSMID

THANKS FOR THE HELP

AFTER GETTING THE AIRPLANE FOLDER REDUCED THIS HELPED A LOT.

HOW EVER AFTER RUNNING CFS_2 I WAS HAVING SOME ERROR PROBLEMS.

I REMEBERED (IT TOOK ME SOME TIME TO FIND THE FILE IN THE GRAY MATTER, AGE THING/LOL)

I HAD REPLACED THE SHIP DP FILES. FORTUNATLEY I HAD SAVED THE ORIGINAL DP FILES.

I DID A COMPARRISON ON THE SHIP DP FILES AND THERE WAS A HUGE DIFFRENCE. SO I DELEATED THE MODIFIED DP FILES AND REPLACED THEM WITH THE STOCK DP FILES. NATURALLY I DELEATED THE CDP FILES AS WELL.

THIS HELPED. I WAS ABLE TO REDUCE THE ERROR PROBLEM DOWN TO ONE.

SO I DECIDED IT HAD TO BE IN THE THIRD PARTY SCENERY FROM WHAT I YOU POSTED. 

I WENT TO CHECKING AND YES I FOUND 2 ELEVEVATED MESH FILES. I DELEATED THEM BOTH. tHIS ALSO HELPED THE FRAME RATES SINCE IT ELIMINATEWD SOME MACROS IN THE ELEVATYED MESH. I THINK THIS IS WHAT IT DID. I PICKED UP ABOUT 2 TO 5 FRAMES PER SECOND.

SHUT DOWN THE CFS_2 AND THEN BOOTED UP CFS_2.

THE SCENERY LIBRARY REWROTE THE SCENERY LIBRARY FILE (I DELEATED IT AS SUGGESTED).

THIS RESOLVED THE ERROR MESSAGE PROBLEMS.

WINDOWS XP_PRO

I HAVE (NOT INSTALLED WINDOWS XP)

I COULD DO A DUALL BOOT

IN WINDOWS XP_PRO YOU CAN HAVE MULTIPLE LOG INS. I HAVE ONE

I HAVE THREE 80 GIG HARD DRIVES C: HAS THE OPERATING SYSTEM ON IT. THE OTHER 2 HARD DRIVES G: FOR C:DRIVE BACK UP H: FULL SYSTEM RESTORE (ALL FILES AND FOLDERS)

I WANT TO HAVE MULTIPLE CFS_2 GAMES ON THE C:DRIVE,

CFS_2 (STOCK GAME FOR TESTING SCENERY MISSIONS ETC 

CFS_2 EUROPE

CFS_2 PACIFIC

IT HAS BEEN SUGGESTED THAT YOU CREATE PARTITIONS ON THE C:DRIVE.

I WOULD PREFER NOT TO SINCE I ALREADY HAVE G AND H DRIVES. PATITIONS WOULD GIVE ME J AND K DRIVES (TALK ABOUT GETTING LOST AND OVER WORKING THE GRAY MATTER. I HAVE A HARD ENOUGH TIME KEEPING ALL THE DRIVES AND FILES STRAIT AS IT IS).

I STARTED TO INSTALL A SECOND COPY OF CFS_2 ON THE c:DRIVE

FIRST SCREEN IS UNINSTALL OR REINSTALL THE PROGRAM.

I STOPPED SINCE I DO NOT WANT TO OVER WRITE THE EXISTING CFS_2

IF I SELECT REINSTALL WILL I GET A SECOND WINDOW SO I CAN RENAME CFS_2 AND THE LOCATION?

EXISTING LOCATION.

C:/PROGRAMS/MICROSOFT GAMES/

CFS_1     CFS_2  CFS_3    FS_98     FS_2000

I WANT TO ADD THIS

C:/PROGRAMS/MICROSOFT GAMES/

CFS_2 PACIFIC CFS_2 EUROPE  CFS_2 TEST (STOCK)

THIS WILL GIVE ME 3 VERSIONS OF CFS_2

IF I CREATE A NEW USER ACCOUNT OR CREATE A PARTITION AND DO A DUAL BOOT THIS PUTS THE COMPUTER TO A STOCK CONFIGURATION ON THIS ACCOUNT OR SECOND BOOT.  I WOULD HAVE TO INSTALL DRIVERS, PROGRAMS ETC. THIS IS LIKE HAVING A DIFFRENT COMPUTER.

WHAT DO YOU SUGGEST I DO TO HAVE MULTIPLE GAMES OF CFS_2

THEN I WILL DO THE SAME FOR

CFS_1 EUROPE     CFS_1 PACIFIC    CFS_1 TEST


CFS_3 EUROPE     CFS_3 PACIFIC    CFS_3 TEST


FS_2000 MOD        FS_2000 TEST


MICROSOFT TRAIN SIMULATOR STOCK

MICROSOFT TRAIN SIMULATOR  TEST

THIS COULD POSSIBLY HAPPEN IN THE FUTURE.

WINDOWS XP
C: CFS_1

WINDOWS XP_PRO
G: CFS_2

WINDOWS XP
H:FS_2000 FS2004

WINDOWS XP
I: MISC

IM TO OLD AND SHORT ON GRAY MATTER WHAT HAPPENS IF YOU RUN OUT OF ALPHBET FOR HARD DRIVES LOL???

I PROBABLY SHOULD HAVE STARTED A NEW FORUM?


THANKS AGAIN FOR THE HELP.