I am using windows 7. I tried installing last 3 releases of source tree, one by one following the clean up methods suggested including all the folders clean up etc. But i never succeeded. It always hangs in the atlassian account login window. When i checked windows Application logs, it says faulting module is "jscript9.dll". The log is as shown below.
Faulting application name: SourceTree.exe, version: 2.1.11.0, time stamp: 0x598e3eeb
Faulting module name: jscript9.dll, version: 11.0.9600.16384, time stamp: 0x5215e4c5
Exception code: 0xc0000005
Fault offset: 0x000000000041aaac
Faulting process id: 0x49c
Faulting application start time: 0x01d32c7e96e8bae5
Faulting application path: C:\Users\kpaduvil\AppData\Local\SourceTree\app-2.1.11\SourceTree.exe
Faulting module path: C:\WINDOWS\System32\jscript9.dll
Report Id: c9f78798-9872-11e7-bf1a-5ce0c557b4f2