[Therion] What means that or where is the fault?

After compiling I get the error “warning -- can't open cavern log file for input”. Therion works well, but there is this error. What is wrong? And after doing the “Vladimir-Chances” into the INI and TCL file the Colors are working. But drawing an area is not further working? I can not define the points for the area. What is here wrong? Thanks for getting help. Markus