After looking one LOG file located in the RAASPRO AppData directory, I can see that the error gives some details. This LOG file is located here:

C:\Users\<Your username>\AppData\Roaming\FS2Crew MSFS RAASPRO

The filename: "FS2Crew RAASPRO Log.log"

One of the file contents I received was:

2022-01-03 11:24:54 - Attemting to connect to the Flight Simulator...
2022-01-03 11:24:54 - CONNECTED to the Flight Simulator!
2022-01-03 11:24:54 - The DLL has been LOADED SUCCESSFULLY!
2022-01-03 11:24:54 - System.FormatException: Le format de la chaîne d'entrée est incorrect.
   à System.Number.ParseSingle(String value, NumberStyles options, NumberFormatInfo numfmt)
   à System.Single.Parse(String s)
   à A..(String )
   à A..()
   à System.Windows.Forms.ComboBox.OnSelectedIndexChanged(EventArgs e)
   à System.Windows.Forms.ComboBox.set_SelectedIndex(Int32 value)
   à A..(ComboBox& , List`1 , String )
   à A.. ()
   à A..()
   à A..()
   à A..(Object , EventArgs )
2022-01-03 11:24:54 - WASM Module's Version: 1.0.0.0

So I would like each of you that has this issue to post your LOG file's content here so I can see the details. The details above comes from a French Windows machine, so I hope any of you having an English language Windows machine to post your contents, so it can be analyzed.

This error seems to occur when RAASPRO is launched either by Toolbar or from Desktop.

Cheers,

Manuel

We just uploaded a new RAAS update (v1.0.4). This update fixes this error. Try to update using your FS2Crew Products manager.

Try it and let me know how it works for you.

Cheers,

Manuel