Unfortunately, this is an always returning problem. I run into the same trap for few weeks ago and I made some changes. Try this version:
http://dl2rum.de/rumsoft/RUMlogApp.zip
Other helpful tips, which may be help or not:
Set your trx to the 30m band before you start RUMlog
Use the Terminal and enter the lines below, one by one, followed by an Enter:
defaults write RumLogOwn PpkIndexMasterOnBand_0 0
defaults write RumLogOwn PpkIndexMasterOnBand_1 0
defaults write RumLogOwn PpkIndexMasterOnBand_2 0
defaults write RumLogOwn PpkIndexMasterOnBand_3 0
defaults write RumLogOwn PpkIndexMasterOnBand_4 0
defaults write RumLogOwn PpkIndexMasterOnBand_5 0
defaults write RumLogOwn PpkIndexMasterOnBand_6 0
defaults write RumLogOwn PpkIndexMasterOnBand_7 0
defaults write RumLogOwn PpkIndexMasterOnBand_8 0
defaults write RumLogOwn PpkIndexMasterOnBand_9 0
defaults write RumLogOwn PpkIndexMasterOnBand_10 0
defaults write RumLogOwn PpkIndexMasterOnBand_11 0
When nothing helps, you have to delete the RUMlog preferences file in your Home folder: ~/library/preferences/RumLogOwn.plist.