Quote: "Maybe there is another storage location?"
Not idea.
I know there are some apps than create a temp file while installing, (ignore if GG does), and when you uninstall it, the app does not delete the temp file, so when you reinstall the app first search for temp file, if it already exist, the app use it as base file, so you do not get a true fresh install. All this, without taking in count, the reg entries.
I had done a GG temp file search in my pc, it say not found anything, but some apps name their temp file like "35NVBF444SDA.tmp", so is very difficult to search them.
I wonder about process when you verify cache via steam app, and it say something like " can not verify X amoung of files, will be dowloaded again". So I wonder if GG does the same when installing?
If so, steam/GG looks than you own those DLC files, but GG do not being able to found then, so crash.
Maybe should be some sort of "deactivateconkit=1", but "deactivateDLC=1", in Setup file.
3com
Laptop: Lenovo - Intel(R) Celeron(R) CPU 1005M @ 1.90GHz
OS: Windows 10 (64) - Ram: 4 gb - Hd: 283 gb - Video card: Intel(R) HD Graphics