I'm sorry, I'll try to fix all those errors, however there is literally no way to cut the length of the polish words meaning apparent and absolute magnitude without loosing the meaning. If I cut those words in any way that could make them not longer than 8 signs, nobody would make out what does it mean. It says some strings aren't translated even thought I have written the translation of them.
Added (10.01.2015, 20:16)
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Ok, I cannot find out what's about those errors from the log. Any help is appreciated.
The location section from the SE log is in the spoiler. I also updated the new version of the pol-gui.cfg file for anybody who wants to download it.