Originally Posted by cj_purve

that sucks ass.
is it possible to make it in 2 parts? ie up to 30 000 pixels then place a second document next to it? I've had to do that before and its fiddly as fuck. Or you can make up the individual graphics in ps & put them together with the text in illustrator?

I just opened ps7 on this old pc & it won't let me make a file bigger than 30000 pixels at all.

My only other suggestion would be to make it about 1/2 or 1/4 the size and let the printers scale it up. Use the print to pdf function to make the final file a pdf so it can be scaled up. Its for a truck sign so pixellation won't matter to a certain extent as its viewed from a distance.

Good luck ;-)