Hi All, I am having a very disturbing issue with my program Project1.vbp calling a security project Security_DLL.vbp that calls Cryptography API. Basically I have a clsSecurity class in Security_DLL.vbp to encrypt password for my connection string to the SQL Server. When I full compile my program, evertyhing works well and no error or whatsoever. But when I make my Security_DLL.vbp and make my Project1.vbp into an EXE file (no problem), it's when I run the program from the .EXE, the program shuts down with the error below in a file. I suspect this has something to memory problem. I believe I have destroy the hash and the key as well as release the context but somehow the problem still exist. Will greatly appreciate if anyone can help out here.