Just for the record...
I deleted flext-0.5.0 and readanysf~0.13.2 and installed flext-0.4.3 and readanysf~0.11 and things seem to be resolved.
your problem sounds like the old flext verion problem. flext made some changes in how it make and creates C++ objects going into version 0.5.0 .
readanysf~0.13.2 should work fine with the latest flext. However, I did notice that pd will crash if you remove a readanysf~ from your canvas. dunno why this is and don't really have the time to look. stop, pause and all the other stuff should be fully functional.
-august