Absolutely Mysterious Compilation Error

I have a class called "TableMaker". And i import its header in the header of another class. The funny thing is that every once in a while the app fails to build, XCode pointing to the line "TableMaker *tableMaker;" in that other header file as the cause of the failure.
If i comment out that line, build the project, and then uncomment it again, the project builds normally. But after a while the whole situation repeats.
What could be the cause?

Thank you in advance for your replies.

Cocoa-dev mailing list (Cocoa-dev@xxxxxxxxxxxxxxx)

Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com

Help/Unsubscribe/Update your Subscription:

This email sent to maillists@xxxxxxxxx