It first appeared when I was using the loop qmc program. The program would exit prematurely right after it began parsing task files.

I tried running the loop tutorials to make sure there wasn't something wrong with my parameter files. The same error appears right after "parsing task files ..." is outputted.

I have tested some of the other ALPS programs (dirloop_sse, dmrg, sparsediag, and worm) according to the tutorials and I am receiving the same error.

There is an older installation of ALPS on the same cluster that was installed last summer and if I try running loop or some other other programs by changing my path variable, everything works fine.

Has anyone seen this error before?

Cheers,
-Dan