This is not the first time when I use Monodevelop for script editing it shows all UnityEngine related stuff in the autocomplete popup and than it randomly decides not to do so.

Reopening it didn't help.

What should I do?

  • \$\begingroup\$ The scripts will work because Unity compiles them, your issue appears to be with the editor not working properly. Did you try reinstalling it? \$\endgroup\$ Oct 10, 2017 at 17:59
  • \$\begingroup\$ I had this problem recently when using a project mapped on a network share. It also generated an error in the Unity editor about an invalid URI. Does that match your situation? \$\endgroup\$
    – DMGregory
    Oct 10, 2017 at 19:52

1 Answer 1


is a typical problem of Monodevelop and Unity.

Close it and double click on a Script from Unity, that opens it correctly.

Do not open it from Monodevelop access.

Or another way is, from the solution explorer in Monodevelop, right click and reload.


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