Space in default installation of unreal engine prevents compilation

It looks like I cannot run a previously working build (4.10.2) due to this:

1>------ Rebuild All started: Project: UE4, Configuration: BuiltWithUnrealBuildTool Win32 ------
2>------ Rebuild All started: Project: MachRace, Configuration: Development_Editor x64 ------
2>  \Epic was unexpected at this time.
2>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.MakeFile.Targets(42,5): error MSB3073: The command ""C:\Program Files (x86)\Epic Games\4.11\Engine\Build\BatchFiles\Rebuild.bat" MachRaceEditor Win64 Development "C:\Users\max\Dropbox\projects\games\machrace\UnrealProject\MachRace411\MachRace.uproject" -waitmutex" exited with code 255.
========== Rebuild All: 1 succeeded, 1 failed, 0 skipped ==========

Can this be fixed without installing 4.11 from source?
Thank you!

Hey mxnko-

I believe you’re saying that you attempted to build the 4.11 source and now 4.10.2 is not working, is that accurate? Can you explain exactly what is happening?

Cheers

, Sorry for lack of clarity.

4.10.2/4 works fine. I migrated my project to 4.11 with launcher installed 4.11. Previously I was running 4.10.2 installed from source. Previous configuration still works.

This problem is only local to 4.11 installation from launcher.

For clarification, you’re saying that you have a project that was originally a 4.10.2 project using source code that you converted to 4.11 with the binary engine and now the project won’t compile. Am I understanding correctly? Also, I noticed the Dropbox folder in your file path, are you running the project from cloud storage? If so can you try making a local copy of the project and see if that can compile.

That is correct. I’ve converted a 4.10.2 source project to a 4.11 binary engine.
I will try solving this with 4.11 source first. Yes its running out of dropbox folder on local harddrive and is constantly being synced. I’ll see if it works outside that folder as well.

, thank you for your time and willingness to help! I had the same issue when I moved the project out of dropbox.

I reinstalled from source, it works now. Source installation path does not have spaces in names.

Reinstalled from source to path without spaces.