This happens a lot. Thankfully it’s easy to fix:
Basically you just have to add the svn:ignore on build-number.txt
1. In TortoiseSVN select “Properties”
2. Click the “Add” button
3. Define the svn:ignore property:
4. COMMIT THE CHANGES!!! Don’t forget to do this or you’ll keep getting the error.
DevOpsNet 
Hi James,
Great article!
Just wanted to say – if you’re not using Tortoise 9say for example because you’re using linux) then you can achieve the same thing using this
First navigate to the Target Folder where build-number.txt is, then execute this svn command.
[TargetFolder]>svn propset svn:ignore build-number.txt .
(Don’t miss out the dot on the end – that means apply changes to the current folder)
Thank you for this James! This really helped a lot! 🙂