Api Vb.net SS2 - Can't run .dll provided with sdk sample

Hi, i try to execute any .dll provided within sdk/PowerInRoads SS2. Unsuccessfully, i'm getting same error message:

C:\Program Files (x86)\Bentley\PowerInRoads V8i\PowerInRoads\InRoadsGroup\sdk\samples\VBNetSamples\VBNetInProcess ...

AddStationEquations2AlgPoints.dll

ImportAlignmentFromASCII.dll

StationEquationsFromCogoPoints.dll

AlignmentPointsToCogo.Net.dll

What should i do to run properly those .dll ?


Thanks

-Hugues