New Post: Package ‘stats’ in options was not found

I had the same problem with 1.5.22. The trick with adding "c:\Program Files\R\R-3.0.1\bin\i386" to the Windows path permanently worked. Note that in my case adding of just one path of the two above is enough.

The problem is solved. But this took a while! Note that I tried to add the same path to the current process %PATH%. This does not work.

I would suggest to mention this issue in the manuals and point to a possible solution.