Corrected entry: In the scene where MacGyver is meeting his contact Grotsky in the park, Grotsky is reading a paper. Though the story is set in Budapest, the paper Grotsky is holding is Dutch: De Telegraaf. De Telegraaf has a very distinctive logo. As Grotsky folds the paper the letters "De T" from its logo can be seen. Plus a word from a head line "strijd". It seems as though they knew they had the wrong paper: Grotsky is trying his best to obscure as much of it from the camera as possible. (00:10:00)
Corrected entry: During the opening scene, right before Mac and the guy he rescued are going to jump off the cliff, Mac shoots The Gun. As most fans will know, Mac doesn't shoot guns, and hasn't since the "childhood tragedy".
Correction: So, what's the mistake here? No mistake in this episode, certainly - if subsequent episodes say that he's not fired a gun in that time, then there's an argument that there's an error in those episodes, but him firing off a gun in this episode cannot be considered a mistake.
Correction: Budapest is a huge city with lots of nationalities there for business or tourism. It is not unusual to find newspapers from foreign countries in a large International city. I can find newspapers from all over the world at a news stand in Vancouver, BC, Canada.