Yes, the weird stuff at the end is Robospeak for the location where the error occured. Upside: Double click on the message and it jumps right to the error :)
I had to encode the exact location in there in order to make it more stable (before it was regexing the location from the String XXX - Line X, column y, but that didn't work all too well with external files.
Also, with Tools -> Enable call stack, you'll get a nice call stack so you can trace back the error.
Yes the delete key causes havoc (I don't remember why, but I remember that this was extremely messy to implement), but the backspace key should work fine as long as you are within the selection (in your case between v and a or a and r). I admit it's a bit glitchy, but once you get used to its special behaviour, it does the job just fine.
thank you for the reply. I will have look at HISE project system to be sure where to put samples in order to be portable to another computer. Also sample maps need more studying on my side.
Redirect Sample Folder seems interesting, thank you. On Mac I sometimes place sample libraries on different hard drive and then create filesystem link. Being able to do that from sampler is very comfortable.
I discovered HISE several days ago and it has impressive set of features while being easy to use for common scenarios. I especially appreciate mapping samples automatically by file name and round robins are breeze. Thank you for this nice piece of software!