I keep getting an error message when I run iASign using both the automatic IMEI method and the manual. after the program appears to run it opens a picture viewwer window and gives me a message that the file is corrupted.

Using vista:

1. I have run jailbreak succesxfully
2. I putfile phoneactivation.pem into lockdown
3. I run iASign and get "Couldn't display iASign.mac because it is corrupted.

Am I using the wrong version of the program. Is this for mac?

I would really appreciate it if someone could help.