Not sure if it is a altbinz bug. But I got this a couple of times now with different files.
[Dec] Exception Out of memory while expanding memory stream
This happens at the end of downloading of a file, when it should be written to disk. Right after [Dec] Yenc, Filename: XXX
Also with and without memory cache.
I can reproduce by downloading the same file(s) again. It won't be saved (decoded).
Altbinz 0.46.0.1 on Windows 10 x64.