"Too Many Items Bug"- Game freezes upon entering a town/location - If you, your NPC's and your car goes into a town with too many of
these items or if you acquire them in there, the game can't save the state of the map properly once you leave (the problem is not having many items on a map but to bring too many of those with you when you leave). You will not notice it's broken until the next time you try to visit the place, then the loading symbol (spinning globe) will freeze and the game will crash. Removing most of the items will stop new maps from breaking but won't fix the ones that already are broken. You can sort of fix this by going into your savegame slot and replace the broken map save with one from a working save slot. You must have been to that location in your working save first though, otherwise that map will not exist in that saveslot. (ie to fix chinatown in San Francisco, take the file SFCHINA.SAV from a working save and put it in your broken saveslot.)
In case you don't have a working save, start your game, push Ctrl-R at the title screen, load up the map you need and save game to any available slot.