So for a few hours now i have been having real issues with Mechjeb. Only last night was Mechjeb working accurately and now it's simply broken without any change to the game, files, reason or ship usage. First all, my accent guidance is not working properly - the auto staging stops at stage 2 and won't continue (i have to do it manually past this point) fine okay. The guidence is now hugely out usually by as much as 100k or more on the AP - fine okay so i use a manoeuvre plan to correct the colossal mistake and use autopilot to execute this move. Nothing, it doesn't turn to the target on the navball at all. Fine okay so i do it manually, wait till the burn window - again nothing, doesn't fire the thrusters, nothing. At the moment it's just gone, the entire mod works in dribs and drabs. Just for confirmation i have fully charged electrics, enough fuel to get to predicted ap and also when i have to correct orbit- not to mention it was working perfectly 24 hours ago. I have reinstalled 3 times without any change. Any ideas? Thanks.