Hello Larry, the reason could be that no speaker or headphones are plugged into the computer. Two other users reported the same error message and that was the reason.

See also the FAQs file on my website www.dk1tb.de, Engl. page "Downloads": * k. Ole error 8004503A……* The SatPC32 voice feature requires the Microsoft Speech SDK (for Windows XP: SAPI 5.1 ) to be installed on the PC. If it is missing you will get the aforementioned error message. The SAPI 5.1 could be downloaded for free from the Microsoft web site: http://www.microsoft.com/reader/developers/downloads/tts.mspx Unfortunately this site is no longer available. But you will find other links, search with the keywords "SAPI 5.1 Download".

Windows 7 and 8 come with the Speech SDK installed. A user got the errror message under Windows 7, but found the reason: The message appears if no speakers or headphones are plugged into the computer.

73s Erich, DK1TB

Am 22.05.2015 um 15:08 schrieb KE6PPE--- via AMSAT-BB:

My old computer crashed and I'm installing on a new machine. OS 8.1 .When I start the program it come up with { OLE-Fehler 8004503A, Class ID: ( A5584957-EF07-419C-BACD-9931F1256D92} , ) . When I click ok it comes up with { OLE-Fehler 8004503A, Class ID: ( A5584957-EF07-419C-BACD-9931F1256D92}. What does this mean?

Larry KE6PPE _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb