I was trying to use Microsoft’s SyncToy utility to backup some of my data on my Windows Vista 64-bit pc, but the program kept crashing with the following error:
Problem Event Name: CLR20r3
Problem Signature 01: synctoy.exe
Problem Signature 02: 188.8.131.52
Problem Signature 03: 453f990b
Problem Signature 04: SqmManagedWrapper
Problem Signature 05: 184.108.40.206
Problem Signature 06: 453f9909
Problem Signature 07: 8
Problem Signature 08: 38
Problem Signature 09: System.BadImageFormatException
OS Version: 6.0.6000.2.0.0.256.1
Locale ID: 3081
I knew I was running a Windows Vista compatible version of SyncToy, so I figured it must be a Windows Vista compatibility issue. I found Josh’s post which describes his solution for the problem – installing Microsoft Network Monitor 3.0.
Josh resolved this error by copying custsat.dll, which is installed by Network Monitor, into the SyncToy installation directory (C:\Users\YourLoginName\AppData\Local\SyncToy). Once I replaced the existing custsat.dll with the version installed with Network Monitor 3.1, SyncToy started right up without a problem.