MT3D-USGS doesn't handle recharge and EVT properly with MODFLOW 6 models.

[rbwinst-usgs]

The attached model terminates abnormally on line 822 of ssm1.f because it tries to access the recharge concentration array in a MODFLOW 6 model but it does not read the recharge concentration array with MODFLOW 6 models. What it should do is skip to the next thing for MODFLOW 6 models. The same thing is true for EVT although that is not illustrated in the attached model
ImportedP10.zip
.