oclHashcat64 stuck on "Generating bitmap tables..."

I had goodluck with Hashcat on my nvidia desktop (big thanks!!!!!).

But... On my freshly re-installed Win7 AMD (AMD Radeon HD 6520G) laptop (plus I did updates, .net, c++, etc, and amd 14.4 driver) when I launch oclHashcat via gui I see:

Quote:oclHashcat v1.20 starting...

Generating bitmap tables....

Then it just sits there and freezes

Any tips? What am I missing?