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printer will print test page but nothing else

I have Slackware 10. I was trying to set up my printer (hp psc 1210) and I seemed to have gotten everything working through CUPS. I did the browser setup thing and everything installed correctly. I setup the printer as USB printer #1 and selected the model. I can successfully print a test page. Anything else, though turns up errors. I get :
A print error occurred. Error message received from system:

No valid print executable was found in your path. Check your installation.

The printer is turned on and is set to accept jobs.

Code:

ls -l /usr/bin/lp*

The lp, lpr,lprm etc
are links to lp-lprng,lpr-lprng etc. by default.
Either remove lprng package or fix the links (you only need to do this to (lp,lpr) links) to point to
lp-cups, lpr-cups.