Hi,

I have 4 sharepoint 2013 environments  , on 3/4 them my custom field works perfect ... but.. on the last machine 

which is the production machine I get 

"Field type myCustomField is not installed properly. Go to the list settings page to delete this field"

* 2 environments are same , other 2 have less servers

* The custom field works when I use the GUI ( I can add/delete my custom column & add/edit value to column )

* The error appears only when  you get to the column with code (C# / powershell ), when you try to get to $list.Fields value.

* I reinstall 1000 times

* Again, this works on 3 other environments ...

*Any ideas why? what can I do? How can clean all the "leftovers" of an uninstalled solution ?

Thanks!

Hi

check the internal name of the field in production and same in the code,any kind of mismatch?

Or try to give different GUID to the column which giving error.

try exporting list schema of working list and non working list and compare both,it will give the fare idea about whats going wrong.