I looked through all 71 of the 0.4.2.0 Crash Dumps.
All of them seem to be caused by KERNELBASE.dll, which is a native Windows DLL. I did some quick googling and found that KERNELBASE.dll can cause issues in many programs, which makes sense if it's deep in Windows.
As far as I can tell from these crash dumps, there was no Tower Unite code involved in these crashes, or if there was, the crash originated in the KERNELBASE.dll, and therefore we can't find the source, since we don't have the source code to KERNELBASE.dll.
Thanks for uploading these crash dumps.