I believe this should be temporary issue,
any way, could you please mention Environment OS and Excel along with bit ?
are you inserting BW/HANA Data source ?
which platform (I mean Netweaver / BIP /) ?
and also you mentioned with SP9 Patch1 issue is solved, could you specify what the problem you are facing with SP9 P1(at least steps to check in my system)
Regards,
Subhash