unserialize() error NavEE for Super Admin only

Hi,

I’m getting the following error on my site, but only when logged in as a Super Admin. It had been working fine all along and I’m not quite sure what could be causing the error? NavEE is not working at all either.

Severity: Notice Message: unserialize() [function.unserialize]: Error at offset 65535 of 65535 bytes Filename: navee/mod.navee.php

Any help would be appreciated as I’m really at a loss…

Thanks in advance!