Steve,
I was able to replicate your 'message'. The message is simply a prompt, asking if you want to run the add-on this session. It appears for any 'ManualLoad' arguments in the exe.xml file that are set to True. Changing True to False automatically loads the add-on, eliminating the prompt.
Open the 'exe.xml' file (in the same folder as FSX.cfg. Open in Notepad). Your's may look different as the installer applied different line indents (none). Also you may have additional <Launch.Addon> sections for other add-ons.
<SimBase.Document Type="Launch" version="1,0">
<Descr>Launch</Descr>
<Filename>EXE.XML</Filename>
<Disabled>False</Disabled>
<Launch.ManualLoad>False</Launch.ManualLoad>
<Launch.Addon>
<Disabled>False</Disabled>
<ManualLoad>False</ManualLoad>
<Name>AICarriers</Name>
<Path>C:\Program Files\AICarriers\aicarriers.exe</Path>
<CommandLine>-nogui</CommandLine>
</Launch.Addon>
</SimBase.Document>
Make sure the <Launch.ManualLoad> and <ManualLoad> arguments read False.
Dave
Added Jun 27
th, 2011 at 2:14pm-If you manually created exe.xml from the sample_exe.xml from the manual install instructions, the error is here:
<?xml version="1.0" encoding="Windows-1252"?>
<SimBase.Document Type="Launch" version="1,0">
<Descr>Launch</Descr>
<Filename>EXE.xml</Filename>
<Disabled>False</Disabled>
<Launch.ManualLoad>True</Launch.ManualLoad>
<--change True to False
<Launch.Addon>
<Disabled>False</Disabled>
<ManualLoad>False</ManualLoad>
<Name>AICarriers</Name>
<Path>AIcarriers\aicarriers.exe</Path>
<CommandLine>-nogui</CommandLine>
</Launch.Addon>
</SimBase.Document>