Update to v1.2a. This fixed a major bug which made it impossible to advance the story line. It is now fixed.
Version 1.2 update: This fixes some bugs in V1.1 which caused crashses. It also unlocks all of the Transfender mod garages. All of the guns and weapon challenges are opened up in the Ammunations. Some of the interiors that were previously enabled are now disabled (the house that's on fire in "Burning Desire" and Madd Dogg's mansion) I think you should have to unlock those before you enter them. And finally some cars that didn't spawn until later in the game have been enabled.
Version 1.1 update: This adds the ability to purchase all of the safe houses from the beginning of the game. The businesses (Wang's Auto, Zero's Shop, and Verdant Meadows) still need to be unlocked in the storyline. Also with this update, all of the airplanes in San Fierro are unlocked. So now it is like every other airport. Meaning if you can get over the fence, you can fly any planes.
This mod removes all of the barriers that are on each bridge and eliminates the 5-star wanted levels for leaving Los Santos. It also opens up many of the interiors from the start so you can gamble or buy nice clothes at any time.