I'm petty sure my exact steps were this:
return from end of game to UI
mechlab
configure (JR7-F(C) that I own, not the trial)
remove a module (I think it was a Cool Shot 9x9, which I just took it out by accident)
add an Improved Arty Strike
add the Cool Shot 9x9 back in
checkout
return to home screen
social
ready up -----> Error
I went into the mechlab and inspected the error, but it doesn't give any reason, just that I won't be able to launch it while errors exist.
I tried removing the engine from the mech and checking out, leaving the mechlab, putting the engine back in and checking out again. The error message still displayed.
I restarted my client, but the error still exists.
I haven't been able to use the 'Mech since.
Update: I removed the 2 modules I had in the mech, and a third module (another coolshot 9x9) appeared. I removed that one, checked out, put the 2 I wanted back on, checked out, and it was good to go.
Edited by DEMAX51, 01 April 2014 - 07:15 PM.