This issue which has now been confirmed by development seems to be hitting a few people when installing Microsoft Dynamics GP v10.00 Service Packs and Year End updates. This affects Service Pack 2 and all later builds/hotfix/updates.
Edit: We are expecting this to be fixed in builds to be released in March.
Please see the following Hot Topic posts for more information:
The method described in the Hot Topics does not handle format changes and/or additions or changes to strings and messages. I would suggest that these changes are recorded as macros when they are made so they can be easily recreated in the new forms and reports dictionaries. Please see the Knowledge Base (KB) article below for more info:
17-Jan-2009: Add Expected Fix Date.