Hmmmm

- had you emptied the Save folder after applying that fix pack? Some changes that are made will make the Saves craptastic...
TDW's SH Validator is another tool we've used. It can run from anywhere on the computer. Just tell it you are checking SH4, and point it to the folder. There are some caveats when checking the German side of the game, of coursre... The proggy was written pre-Gold SH4, so is only directly designed to check the "Data / Campaigns / Campaign" folder.
The way to get around that "restriction" is to rename the US side in "Campaigns / Campaign..." to be Campaigns / CampaignUS". That way, you can change the name of "Campaigns / CampaignGE" to "Campaigns / Campaign". You also have to move the files out of "Campaigns / Campaign(GE) / CampaignData" into the newly renamed "Campaign" folder. If you want to check the SingleMissions and other files outside the Campaign folder, drag copies of them into the "Campaigns / Campaign / PatrolObjectives" folder, since that folder and its contents are also checked. Now, I have messed-up more than one install of OpMonsun and/or Dark Waters from NOT getting things back where they belong afterwards, so what I did the last time, was to do a "fake" install and work on that. Make my mod, and then test it in the good install. Just be certain of your folder structure, of course, when you build your changes...
Also, in spite of the warnings that TDW will display, the Campaign is indeed checked. He just never added the detected issues to the log file before he finished modding the SH series, so after the app runs, create a log file, and then open it with Notepad++ or similar, and then at the bottom of TDWs app windows, find all of the entries that are flagged with "******** " leading and trailing, and copy those file names and errors into the log file for your posteriors's sake, and future editing... Thing is, even with Hebe's Tool, and TDW's tool, there are still quite a few errors that are not caught...