Can't even run IDE

Latest version.

I get a flash screen that says something like 'launching configuration' then nothing. Tried various compatibility modes, reboots, etc, but no luck.

Machine is 6 core AMD, Win7 HP SP1. My older IDE (no idea what it was) ran OK IIRC.

Fallen at the first hurdle! Anyone any ideas?

Thanks in advance,

Nick

Same problem I'm having. The debug log and other error messages are at Arduino IDE fails with ArrayIndexOutOfBoundsException - Installation & Troubleshooting - Arduino Forum

Was this happening in version 1.6.5?