Hello Goran13, and welcome to the HP Forums, I hope you enjoy your experience!
I see you're running into issues trying to install OCR software. I would be happy to assist you, but I do need a little more information.
Is the full feature software installed?
What version and service pack level are you using in Windows XP? If you have any issues in finding that, you can refer to these documents:
Which Windows operating system am I running?
Is the Windows Version on My Computer 32-bit or 64-bit?
Does the error come up while downloading or during the installation?
Please let me know the results of your findings, an thank you for posting on the HP Forums!