crypto_rand_uint64: Assertion max > 0 failed

I'm running tor-0.2.1.21 on an embedded device, a Sagem F@st 3464 modem/router. some specs: busybox-1.15.3 uclibc-0.9.26 libevent-1.4.12 openssl-0.9.8l

When starting tor it always fails with following error message:

[err] Bug: crypto.c:1876: crypto_rand_uint64: Assertion max > 0 failed; aborting.

Is there anything I can do to locate the problem?

[Automatically added by flyspray2trac: Operating System: All]

Trac:
Username: cygeus