Programs that do not have the Registration option (Cracked Programs / Self Written Programs / Open Source Programs) gain a new program option, "Bug Resistance," when first cracked/created. Like Registration and Copy Protection, it does not count against the limit on the number of program options that may be applied. Unlike other program options, the rating of Bug Resistance is not chosen.
Subsequently, each time the unregistered program reaches its Degradation interval, instead of losing a rating point as in RAW, the end user of the program rolls an Edge + Bug Resistance test vs a threshold of the program's rating. Failing to meet the threshold results in the program developing the "Bug-Ridden" software bug (the GM may substitute the bug "Quirks" for skillsofts). Glitching the test results in the program developing the software bug "Deadlock", and critical glitches will result in either a "Resource Allocation Error" bug or "Fatal Flaw" bug.
Should a bug develop, it may be found and repaired with the standard procedure for patching bugs. (Yes, this does include Skillsofts, as both the bug and the patch are associated with the drivers that let the skillsoft interface with your skill wires, or the expert system that drives the skill choices that the soft makes, and not the actual simsense data used to make the body respond the way the expert system has chosen.)
So to sum up, when you crack your Pistols skillsoft to run off a copy for your little brother along with the Manhunter you've been shooting with that skillsoft for years, it's not mysteriously going to get less proficient with that same pistol two months down the road. That may be just long enough however, for the bug that was introduced by the last official update you received just before you cracked it (an update which was trying to correct some other bug for users who are running an entirely different brand of skillwire system) to manifest itself and start becoming a serious problem. Or it may take 4 months or 6 months or more if you and your brother are lucky. Who knows, such a bug might never manifest itself, but maybe by the time month 12 rolls around, the adaptive expert system that drives the skillsoft may have decided that shooting the target in the kneecaps is always the only correct option, something that the re-baselining performed by an official update would have fixed, but that you have to fix for your little brother yourself, since you gave him an illegal copy.
