Olimex,
and
because up
mistake.
Hi, Fernando. As to your Olimex programmer (you don't mention which one) you might want to try the US user group for the programmers:
Browse thru the old posts, and you might find your problem solved. Also look at the tutorials and the FAQs on that site.
I'll bet you've already spent all the money you need to program PICs. But without any specific information, I'd just suggest that you first look to your cables. The contacts do wear out. Borrow a new one and try it. Also try to use a test bed computer with a minimal system and no other concurrent programs. I've seen "development beds" which have so many programs running, they hang themselves up whenever anyone presses a key or clicks the mouse. It's best to reformat and reload from scratch. Make sure the BIOS settings for the PC ports are correct. You don't need the fastest computer, but you sure need the most reliable. Look also at the port pins on the PC. If some are wobbly, that might cause problems.
Good luck Chris