sullivandavid:
Fernando,
Did you use the DLLs from the before mentioned bulletin board or did you use just First Data's DLLs?
I've just checked my bin folder and I have the following dll's (related to the LinkPoint):
Interop.LPICOM_6_0lib.dll (Version 1.0.0.0 - 5.50Kb)
libeay32.dll (Version 0.9.8.11 - 993kb)
LinkPointTransaction.dll (Version 1.0.2004.18369 - 10.0kb)
LpiCom_6_0.dll (Version 1.0.0.4 - 1.24Mb)
ssleay32.dll (Version 0.9.8.11 - 196kb)
I hope this will help you. Let me know if it works !