Important Update: RealData will discontinue new software sales on April 30, 2026, after more than 40 years in business. Existing software will continue to work, and licensed users should download and save their installers before support ends on May 30, 2026.

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“There was a problem sending the command to the program” error message

When trying to invoke a RealData product, you may get this message:

There was a problem sending the command to the program.

This may happen if the ‘Ignore other applications that use Dynamic Data Exchange (DDE)‘ option in Excel is set. Please see the Microsoft Knowledgebase article below for instructions on turning this option off, even though the error message shown there is different:

https://support.microsoft.com/en-us/kb/3001579