The TurboActivate.h file tells you what all the errors are and what they mean. In the screenshot you see the error code 8, which is hex 0x8. Find that in TurboActivate.h:
/* MessageId: TA_E_PDETS
MessageText:
The product details file "TurboActivate.dat" failed to load.*/#define TA_E_PDETS ((HRESULT)0x00000008L)
In other words your app can't find the TurboActivate.dat file, or the file is corrupt. Make sure the TurboActivate.dat file is in the same folders as the TurboActivat.dll file. Try using PDetsFromPath() to tell TurboActivate where the *.dat file is explicitly.