Cutlist Local file is modified error

We've been able to modify our weldments in the past. Typically a 2 X 2 X .25 could be customized to a 2 X 2.5 X .25 and then noted up in the custom properties area without problems. Something in SW 2009 weldments might be bringing this process to a sudden stop. We have a project which spans releases of SW. We were in the final stages of this project and "ugraded" our SW version number. Our systems are running SLOW. Plus it seems I'm seeing a repeated error message when trying to check in certain files. It's pointing to a weldement cutlist and states "local file is modified". The check in fails. This file checked in just fine w/ 2007 we made no changes to it since the upgrade. 2009 has changed the rules and we're scrambling to find answers.

-MacSolidworksWeldments