Problem starting project on engine source code :engine modules are out of date?

[MatthewSoedesco (MatthewSoe)]

@MatthewSoedesco

engine modules are out of date and cannot be compiled while engine is running please build through your ide.

What we ended up doing was going into DesktopPlatformBase.ccp and changing Arguments += " -Progress -NoEngineChanges -NoHotReloadFromIDE"; too : Arguments += " -Progress"; .
However I’ve now encountered this in a second project and this doesn’t always seem to do the trick