Realm - module file was created by an older version of compiler

Question

I use latest version of xcode and swift 2.2. One of my projects, which I havent open for several month now not building, because of error module file was created by a

Answer 1

Can you try the following?

• Delete derived data
• Clean the build folder (click on Xcode's Product menu while holding down the Option key, and choose the Clean Build Folder menu item)

Sometimes simply performing a clean build isn't sufficient to flush the invalid intermediate products or cached data.

Answer 2

I faced the same issue when used Swift 3.2 in my project. After upgrading to Swift 4.0 issue disappeared. Cleaning project folder, derived data, restarting Mac - nothing helped.

Answer 3

I had this issue when upgrading from Swift 2.2 to Swift 3.0, specifically for Realm Swift cocoapod. I think this solution should work for this general issue. Here is what worked for me:

(1) Go to derived data folder /Users/(yourUserName)/Library/Developer/Xcode/DerivedData

(2) Select project with error

(3) Delete

(4) Clean project

(5) Run

Cleaning initially did not work for me. Hope this helps!