you are running a version of mojoPortal that was released way back in 2010, there have been important security fixes since then, it is not a good idea to keep running that old version

my advice is look into upgrading to the latest version of mojoPortal and Form Wizard. if you need help with that probably the guys at i7MEDIA could help you, there will likely be lots of little issues to solve upgrading from a version that old and possibly you would need different hosting to support .NET 4.5 (just depends on what your current host has) but I'm sure they could handle it

It is most likely an old bug that has been fixed and upgrading would likely solve it.

If your site is on the internet, I strongly urge you to upgrade, it is not safe to run an old version like that and it is only a matter of time before your site could be hacked. This is really not something to take lightly if your site has any importance. I would not sleep well at night if I were running a site with that version.

If it is an intranet on a private network you can probably get away with waiting. If not I think you should give it more urgency.

In the meantime I would make sure you have a very good backup routine so that in the event your site does get hacked you have a way to recover.