gpg4win doesn't import or generate keys.

Hello everyone,

I’m using gpg4win and I have the following problem:
I can’t create or import keys.
Using either winPT or GPA, I try to generate a new key pair, I fill in my name and email address and after waiting some moments the key to be generated, I get the message: “General Error” and the proccess stops. When using the GPA the message is:
“The GPGME library returned an unexpected error.The error was:
General Error
This is probably a bug in GPA.
GPA will now try to recover from this error.”

Do you have any idea why this happens?
I uninstalled and reinstalled gpg4win but the problem remains the same…
Any help, please?