Thank you very much. Appreciated.
Regarding the running animations. short answer is: sadly no.
There is a project by Death's Darling, called LPC Revised that has running, climbing and sitting animations. Unfortunately, even thought there's plenty clothing options in LPC Revised, there's not as many as I gathered here. Most important, the clothing is not 100% compatible with my version of LPC, and I'm not planning to mass convert so many assets as I have done already.
Regarding the export problem, I'm at a loss here. If you run the app from a command prompt, does the program writes any error messages ?