Headway themes cache crashed

Hi Everyone,
could really use some help out here with this one:
my website is running Headway framework which works like a charm-usually. Today all of a suddenly my theme didn’t load anymore, changing the theme to twenty-twelve or something else worked fine, but Headway just didn’t load the CSS.

Disabling the cache in Headway settings helped to load it normally, but the load time is expectedly horrible. But enabling cache again repeats the initial error, when the page just doesn’t load.

The only way (I know of) to delete Headway’s cache is trough the visual editor, which simply doesn’t load when cacheing is on. But I can’t delete it when caching is off neither.

Any help would be just so very appreciated!
I’m guessing I’ll have to delete the cache phisically somewhere, but have no idea where it’s hiding.

Thanks in advance!