Printer not connected - iMac 10.8.4 & EPSON XP400

Everything worked fine until Mountain Lion 10.8.4 and latest Apple update of early July with new Epson drivers and after many attempts deleting and adding this printer, using Bonjour or IP direct addressing.

Wireless is fine, no RF interferences, internal printer webpages are correctly accessible, scanning is fine, only printing stops with "Printer not connected" error message.

There is another strange message on CUPS error log, something like "Impossible queuing on Lexmark_Z45 printer".

This was an old printer I unsuccessfully tried to connect to my iMac before buying this new EPSON XP 400 and apparently fully removed from OSX.

I also searched entire filesystem to find Lexmark occurences but nothing was found.

Is it anything related with Bonjour?