Description

When a code project's engine association is switched to a local binary version of a source engine, the project will fail to open from within Visual Studio. Error message says that UE4Editor-ProjectName.dll is missing or built with a different engine version, and compiling the project in VS completes successfully but does not fix the issue.

Command Line argument (ran from Engine/Build/BatchFiles folder location):
runuat.bat BuildGraph -target="Make Installed Build Win64" -script="<path to Engine/Build folder>/InstalledEngineBuild.xml" -set:HostPlatformOnly=true -set:WithDDC=false

Using the source version of the engine, or 4.15 binary from the launcher, allows the project to open from VS as expected

Regression:
No- switching a project to 4.14.3 local binary shows same behavior

Steps to Reproduce
  1. Download/build 4.15 source
  2. Navigate to Engine/Build/BatchFiles folder and run command line argument (see description) to generate local binary version (this step takes about 25-30min)
  3. Create 4.14 code project (source or binary)
  4. Right click .uproject file and switch engine version to local 4.15 binary
  5. Open project's .sln file
  6. Debug->Start Without Debugging

Result:
Project fails to open with missing project module dll

Expected:
Project compiles and opens in the editor

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-42321 in the post.

17
Login to Vote

Fixed
ComponentUE - Foundation - Build - Farm
Affects Versions4.14.34.15
Target Fix4.15.1
Fix Commit3329192
Main Commit3345747
CreatedFeb 23, 2017
ResolvedMar 2, 2017
UpdatedApr 27, 2018
View Jira Issue