Perplexing problem. Within the last two weeks, I went through a complete O/S meltdown and had to reinstall Windows XP Pro (and SP3) together with ALL my software.

Sibelius 6 and Aria went in fine.

GPO appeared to go in OK

Sibelius 5.2.5 went in OK together with the Choral Sounds library.


Sibelius 5 does not find GPO, only the "Sibelius Essentials" variant of GPO.

I need the connection with the full version of GPO. Any thoughts? This is very critical right now.

Email directly to if you have any thoughts.