Kirk, it's not a specific coordinate. But meanwhile I found out how it really works. It' not very intuitiv, but maybe for me only. You should give some online instruction. Now: After reverse geocoding I opened the template of the one photo and checked the "worldballs" beside the concerned fields, closed it, and reverse geo it again. And everything was there. Maybe I can open the template first, check the "worldballs" and do geo reverse. But it seems to work also for the batch template. Wow, now I know how it works! After a lot of confusion. Great, I can just use the general template, check the "worldballs" and apply the infos to the concerned fields. Don't need Houdah Geo anymore. With some variables in the Caption and Keywords fields PM 6 does it all at once. Great! It worked well for all Myanmar photos I tried. But it can't find for exampel the "city" for this coordinate: latitude: N52°21.651' longitude: E12°56.990'in Germany. But it finds the "state". And now "Don't overwrite" works. "Deutschland" stays unchanged. So it might not be a bug. And now my trial time is over. I hope I wasn't to confusing. Bottom line: Everything seems to work like it should. Thanks!
-John