On 3/8/19 12:20 PM, Johannes Castner wrote:
Hi, I have now reinstalled and recompiled things, after a recent bug was 
resolved, but now I’m getting this error message when importing:

Traceback (most recent call:
     from opencog.atomspace import types
ImportError: /usr/local/lib/opencog/libquery.so: undefined symbol: 
_ZN7opencog8BindLink11set_rewriteERKNS_6HandleE

What must I do to fix this problem?

Maybe try to purge the existing installation.

sudo trash /usr/local/include/opencog
sudo trash /usr/local/share/opencog
sudo trash /usr/local/lib/opencog
sudo trash /usr/share/guile/site/2.2/opencog*
sudo trash /usr/local/share/guile/site/2.2/opencog*
trash ~/.cache/guile

and reinstall everything cogutil, atomspace and opencog, from fresh build directories.

BTW, if you don't like compile-waiting, I highly recommend ccache

https://ccache.samba.org/

Increase the cache size to at at least 16GB (even better 32GB). You'll only have to wait the first time to ever compile something. This thing is a marvel, it's also rock solid.

Nil


Please help!

As always, with great appreciation,

Johannes


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