The version of spectre you are using is way too old. You're using a hotfix of a version of spectre that was released 10 years ago.
You need to be using spectre from the MMSIM stream. In late 2004, we separated the simulators from the IC release to allow more rapid development of simulator features, and since then we have had MMSIM60, MMSIM61, MMSIM62, MMSIM70, MMSIM71, MMSIM72, MMSIM101, MMSIM111, MMSIM121 and MMSIM131. In other words, 10 major releases of the simulator.
I can't remember exactly when the bit source was introduced. From some quick tests, it was sometime in MMSIM61 - so anything more recent than that will do, but I'd recommend using MMSIM121 or MMSIM131 as these are supported releases.