500 server error editing or creating plan

Hi,
This is kind of odd. I was able to create a membership plan when I first started working with Membership Pro, but now I get a 500 server error whenever I try to edit or create a plan. I only see this issue when I try to edit or create a plan. Everything else works fine.
Any ideas?
Thanks,
Joe

Hi Joe

That's strange. Could you please submit a support ticket sending us administrator and FTP account of your site so that I can check to see what's causing this issue and get it solved ?

Regards,

Tuan