Not sure what happened but I just did a full clean install again to make sure and re-installed KAC only and it worked fine but when I re-installed all my other mods and it disappeared again in-game and the save file was cleared of all my test alarms. Guess now I'll start adding the mods back in 1 at a time until I find which one is causing the issue. The mods I'm using are MechJeb, Engineer Redux, Astronomer's Visual Pack, Kerbal Attachment System, Kerbal Alarm Clock, DMagic Orbital Science, RasterPropMonitor, Tarsier Space Technology, Chatterer, Universal Storage including module for KAS, Final Frontier, Kerbal Pseudonym, Kethane and RemoteTech. Gonna be a long night lol