Juan,
during a very normal process I started ACDNR, checked to preview a mask. When I try to uncheck, the "Invalid character(s) in numeric literal" ecc..error appears, see the attached screenshot.
The error clearly refers to the midtones value, and obviously I acted only on cursors.
I'm using Ubuntu 12.10 64bit, ITALIAN version; it' s clearly a failure in reading localized numeric strings in numeric fields.
When I change a comma to a dot in a number, the error skips to the next field, but after refresh the previous number returns to the (correct) notation (again with comma) and it's impossible to skip off the error state.
Very urgent, take a look.
Federico