The first time I did it, it created the files with 'viewonly' appended to the file name and said to use the same password to open it.
So I closed the main wallet and browsed to the new view only '.keys' file that was created and when it prompted for a password, I used the main wallet's password but it said wrong password.
So I deleted those files and logged back into the main wallet and tried to create another view only wallet. This time, it creates the files but they look somewhat empty (smaller size) and there's also a '.new' file. Then Monero GUI blows up and disappears. Tried this several times, same thing.
The first time I did it, I did not export the view key. I thought that maybe this was the cause. The second and subsequent times I tried, I exported the view key.
**UPDATE Went into Event Viewer and found this entry:
Faulting application name: monero-wallet-gui.exe, version: 0.0.0.0, time stamp: 0x5c82818b
Faulting module name: Qt5Qml.dll, version: 184.108.40.206, time stamp: 0x5aeb3e6b
Exception code: 0xc0000005
Fault offset: 0x000000000022b28d
Faulting process id: 0x27dc
Faulting application start time: 0x01d524840af68104
Maybe this might shed some light into the exception.