Hi Fortis,
If you are using Isolator version 5.3.5 it might be related to a bug we just discovered.
The workaround until we'll fix it is:
1. Do a search on your machine for "stdole.dll"
2. Open the visual studio command line as administrator and install the dll to the gac:
gacutil -i stdole.dll
3. Open Visual Studio.
Please let me know if it helps.