Getting Started > Upgrading to CitectSCADA v7.20 > Troubleshooting > Compiler Errors
Compiler Errors

Before you configure your project to run in version 7.0, compiling the project will generate a number of compiler errors. These may include messages concerning deprecated and deleted functions, as well as the detected error "No Clusters defined". This detected error will be resolved once you define a cluster in the project.

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