Low and behold....software made no difference...
13:04:52 :TECH : Have you installed the easy interactive tools software?
13:05:03 : ME: yes, did it the other day when the issue happened
13:05:16 : ME: we are a school so don't use that software
13:05:19 : Mike Evans: What version have you installed?
13:05:27 : ME: but i installed it whilst troubleshooting
13:05:28 : ME: erm
13:05:33 : ME: let me check
13:05:42 : TECH : Ok
13:06:00 : ME: version 2
13:06:21 : TECH : There is now version 2.01
13:06:26 : ME: but all my other projectors work without it
13:06:34 : ME: i have 12 of the same model
13:06:41 : ME: this has happened on 2 devices now
13:06:53 : ME: ok
13:07:12 : ME: just dont really understand why that would help.
13:07:16 : ME: i will try
13:07:23 : ME: but if its not on other computers...
13:09:07 : TECH : I would recommend to uninstall version 2.0 and re install 2.01
13:12:19 : ME: ok...still not completely satisfied with that answer
13:13:25 : ME: i cant get my head around why... does it install drivers? But then why do the other 11 machines work without it?
13:15:47 : TECH : Are you using the projectors on a smart board?
13:16:18 : ME: no, just a bog standard dry wipe
13:17:22 : TECH : Is this error appearing when not connected to a computer or if it is?
13:18:02 : ME: they are always connected to a PC
13:18:11 : ME: they are classroom
13:19:02 : TECH : One moment please.
13:20:20 : ME: okie dokie
13:21:58 : ME: im not trying to be difficult by the way.....honestly want to know
13:22:03 : ME: its my job :)