From on October 18, 2016 15:13
Running into a case with an old ironpython (2.9.9a0) on new mono (such as 4.2.1):
./ipy.exe
IronPython 2.9.9a0 DEBUG (2.9.0.0) on Mono 4.0.30319.17020 (64-bit)
Type "help", "copyright", "credits" or "license" for more information.
>>> 1 + ""
Traceback (most recent call last):
TypeError: Value cannot be null.
Parameter name: method
Above the exception is handled somewhat, but with a weird error message. Any quick fix other than upgrading ironpython?
Copied from original issue: IronLanguages/main#1473
该提问来源于开源项目：IronLanguages/ironpython2
