Hi,

>>
The error I get is "Function argument value, type, or count is invalid."
It happens on a line containing this calculation:

CHR(ASC(SUBSTR(lcEncryptedPassword,lnXX,1)) - 1)

If I take this part out the error goes away. My ASP.NET debugging skills are still evolving, so I've isolated the problem by commenting out various parts of the code. This is what causes the error. (Of course it works fine in VFP.)
>>

I'm sorry - what you are attempting to do is still not clear. Am I right in assuming that you are passing a VB.NET string to a VFP stored proc ?
If so you could try STRTOFILE()ing the lcEncryptedPassword string to check what the SP is receiving. Or just break that line up into 3 seperate lines to narrow it down.

Regards,
Viv