CDR Reading Problem

I bought a Liteon 48125W (48x12,48x) and it works fine, my PC detected it straight away etc. I copied a CD to test it out, i used 32x CDR's, and when the copying had finished i inserted it into my CD-ROM drive but it would not recognise the CD at all, so i put it back into the CDRW that copied it and the movie i had copied opened up and played. Why is my CDROM not recognising the CD's? Should i use the copy of Nero that came with the CDRW?

Assuming you're burning 32x or less (to allow for the speed of the disc), it shouldn't matter the version of Nero. The one supplied is merely make/model locked. Try an upgrade from the Nero website to the latest to allow for software errors.