Community,
The actual issue is that I am unable to run SourceTree. Right after installation, when trying the option "Use an existing account", I run into this JavaScript load error. The machine runs Windows 7 64, with all current updates.

Although I could not find an specific topic on that, some generic ones suggest to update Internet Explorer.
This computer does NOT have Internet Explorer to be updated. And our company prefer that we do not install it. I've looked around to see if IE is a mandatory requirement for using SourceTree, but found no such statement...
Can someone please confirm, and while at it, suggest a solution if one exists?
We tried to fully disable the firewalls as a test, but that still wouldn't solve it.
Thanks!
Bruno