I have a similar problem. It started after I upgraded from version 1.8.2 to 1.85.6 standalone a few hours ago.
I used the builder to design a very simple experiment of showing a sequence of pictures. It gives me the error after the 4th picture presentation. The pictures are not the problem.
I tested the demos. Even the helloworld does not run properly. This is the output:
Running: C:\Program Files (x86)\PsychoPy2\lib\site-packages\psychopy\demos\coder\basic\hello_world.py
2.3410 ERROR avbin.dll failed to load. Try importing psychopy.visual
as the first library (before anything that uses scipy)
and make sure that avbin is installed.
2.3455 WARNING Monitor specification not found. Creating a temporary one…
I have avbin.dll in SysWOW64 (no advin file in System32 folder, referring to Avbin.dll fail to load)
Your help is appreciated and thank you for building Psychopy.