Thank you very much. Would be so kind and help me a little bit more? BigMuscle says on page 1 of the above mentioned thread that people should not ask how to apply an experimental build. Could you please direct me to where would I find such an information? Also, after reading the thread, I am not sure if the 506 build shows always a watermark in the right bottomo desktop corner or not. I donated for the 8.1 version, but I do not have the key anymore. Donation confirmation mail linkes me to a page that does not exist anymore and I am not able to download or login the license. Thank you once again in advance.