Crash due to DEP

I am using SmartFTP 3.0.1012 with Windows Vista and have come across a serious problem which stops me doing what I need to do.

I am attempting to upload a flash utility to a webserver (the folder contains various files relating to the flash program), but every time I open the local folder in SmartFTP the program crashes as a result of DEP. It says the program is using memory in an improper way that could be a security risk.

Anyone able to help? Is this something that needs fixing in SmartFTP?

Install the latest version from:

If it doesnt help delete the registry key at:
using regedit.exe