[Resolved] Message stating that folder is over 100Mb

I am running TB Portable V2.0.0.23. Since I don't have any other problems I have not updated to V3 yet.
This message comes up when I receive a message that takes the folder size over 100Mb. When I click O/K button, it continues to work. I didn't realize that TB had this limitation, or is there a setting that brings up this message?
Thanks

Update: Noticed I have an add-on called ShowFolderSize. One of it's options is to set a maximum folder size. The default is set to 100Mb. This is the problem. Just changed the setting. All O/K now.