Error ResCode: Source file ResCode.Clw not found

Someone has come across the error: Source file ResCode.Clw not found

It does not compile any apps, even from different projects. Everyone gives this error.

Looks to me like that is the Clarion/Legacy template chain’s resize class. It would be included by the window resize extension on a procedure.
ResDef and ResCode .clw are part of the install.

This file is on the LibSrc folder. Depending on the Clarion version, I can send it to you…