Class TfrxDataPage not found

Attempting to use the latest Emb VCL version in 10.4 generates a TfrxDataPage not found error. This same report (without any changes) worked just fine in the 10.3 version with the older component set available at that time. Adding a new "hello world" report (just a single page with a text memo) also generates the same error. The report opens fine in the designer, its only at runtime that the error is generated.


  • Additional information that might help. The report is part of a datamodule that gets created at runtime, it is in the creation of the datamodule that this is occurring. The datamodule does have the {%CLASSGROUP 'Vcl.Controls.TControl'} in the implementation. Reinstalling the pro version of the components had no impact.

  • Create small demo project with error and send it to

  • Discovered the problem. My VCL project had a reference to a unit which was including FMX controls. Correcting the reference to point to the proper VCL.Controls corrected the problem with loading reports at runtime.

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