Luis, thought you'd like to know that when I first installed SBuilderX 3.10 to a folder other than the default (but where SBuilderX 3.00 had previously been installed), I received an exception error message (something to the effect that there couldn't be a minus sign in a non-Base 10 number) immediately upon starting SbuilderX. I uninstalled and re-installed to that same folder to be sure it wasn't just a faulty install. But, same result.
I uninstalled and re-installed for a third time, this time to the default folder, and all is now well.
Don