What to check
A blank preview has several possible causes. Avoid changing the report query until you know whether the same report exports correctly and whether other workstations reproduce the problem. Record any message that appears before the blank window.
Troubleshooting steps
- Run a known working report and export the affected report using parameters known to return data.
- If export is correct, compare display scaling and the supported Crystal runtime on a working and failing machine.
- Have desktop support test a reversible application DPI setting where appropriate, then reopen the client and preview again.
Confirm the result
Confirm that the expected pages and values render correctly. If preview and export both fail, investigate the report or runtime error rather than assuming DPI is responsible.