Runtime Error when loading project

When I load one project (only this project has the problem) I get a message:

Runtime Error
Location: XojoPlugins/IDEUtils/IDEUtils.cpp:149
Condition: *src < 128

I click the Continue button and then the error again.

I click the Continue button and then things work.

Does anyone know what I can do to fix this?

File a private feedback case and attach the project so Norman can look at it.