Add try/except in wx_evaluator to get and print exception when command failed and unlock in all cases to not block the python thread
from os import listdir, path
_base_path = path.split(__file__)[0]
__all__ = [name for name in listdir(_base_path) if path.isdir(path.join(_base_path, name)) and name.upper() != "CVS" or name.endswith(".py") and not name.startswith("__")]
helps = []
for name in __all__:
helpfilename = path.join(_base_path, name, "README")
if path.isfile(helpfilename):
helps.append(open(helpfilename).readline().strip())
else:
helps.append(name)