I had successfully used my install of sqldeveloper-4.0.3.16.84-x64 last week. Following a windows 7 SP1 enterprise update it crashes after the splash screen and about 10% of the progress bar, before the message saying it's registering extensions. There are no errors or other information messages displayed. I tried running it from a command window producing no additional information. I have deleted the sqldeveloper directory and downloaded a new zip file and reinstalled. Same behavior.
The data modeler works fine.
Any suggestions on how to proceed troubleshooting this issue.