hp 1000 priner fails to 5012 message

HP 1000 j110a printer worked fine until it ran out of black ink at end of Oct. Took awhile to get a replacement. Installed and hp-levels shows black is 100%; color OK. Ever since I put in the new cartridge it has not printed a single page but everything shows up in queue (lpq -a). If I print from firefox 4.0 I get: Device Communications Error 5012 If I print from command line the error is: Unable to communicate with device (code=12) I see a lot of error 5012 stuff on the web but nothing relating to the hp1000 deskjet. I tried restarting cups (1.4.6) with no change. Tried clearing queue then printing but still same. /etc/cups.conf and /etc/printers.conf are empty but may be meaningless. System is Slackware 13.37 and hplip which comes with the installation is 3.11.3a. Has this happened to others ? am I looking in the wrong place for the right file to fix? PS hp-check.log shows hp-check[2399]: info: : Initializing. Please wait... error: User exit hp-check[2399]: info: : hp-check[2399]: info: :Done.

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