Thus my point JohanF as very simply the warning could have stated that point. GUI is important that makes clear statements. The fact is I saw my SDI as an input option and then dragged it into place, so the logical conclusion is it sees and recognises the SDI input. In trial versions those limit options are usually greyed out noting only available on full version etc. That gives clear information. The fact that the trial version has a watermark it is obvious that is part of the free version to restrict output for commercial use. If they want people to fully try out their software then allow the full options and keep the watermark as that is perfectly understandable. Having seen the poor key quality in their examples I wanted to test it with an SDI feed. Of course they have the right to restrict features. My point is in the evaluation of communications in the software putting a warning with no explanation is the problem. A watermark is often used to allow full feature testing while limiting useful content output. Having a watermark and limiting access to features means higher level evaluation can't be done. If they want me to test it then allow a testing of all and retain the watermark.