Hey there,
I love my Sonar!,I really do,but I was up till 4.30am this morning re re re[and-re] working on an old simple[6 basic tracks-only 1 instrument track for Steven Slate Drums 4 Platinum]and as per usual,I sometimes run a lot of waves plugins,ever since I scored that Studio Essentials bundle,it definitely gets a workout [since I got it for a steal] as does Paul Frindle's Pro Audio Dymamic Spectrum Mapper V2[not a steal AT ALL!],any way just before calling it quits at 4.35am,I downloaded X3d.
I think after only a few hours sleep,today was going to be a tad troublesome regardless,anywayI jumped back in,and loaded the basic 6 track Rock lead guitar extravaganza[lol]and no dice,even with the VS-100 ASIO buffer at MAXIMUM!,never mind the numerous changes to other buffers,milliseconds,Audio Data,from all the 3 choices[import/render/record] that had been fine at 64,down to 24,all this and still no dice...milliseconds of sound,followed by the "Dropout" warning alarm.
This little Dell XPS L502x i7 2630qm[April 2011]has been through the wringer,but even messing with ALL the usual suspects in Preferences,disabling Wi-Fi,disabling the DPC monster Nvidea GT540M[red spike enticer to the extreme!]in Device Manager,and my little 6 track project refuses to play,oh but the 1 stereo track pre master plays just fine.
Consequently Iv'e reverted back to X3c,for the moment,as I'm sure it's something else,and will take the time to eventually sort this out,there is no doubt there are probably 5[at least!] N.I.and Waves compressors too many,but at 3.00am on X1c[all 64 bit,but 64 bit engine unchecked-in preffs,and exporting], all was just dandy!,but now orrrgggh well....computers-love the fact they've enabled me to get back into music,but seriously a Prism Lyra or a [ slightly cheaper depending] RME anything,are looking better,and better by the day.
Hopefully soon I can enjoy the unbridaled glee that Craig seems to be having....If I'm Extraordinarily lucky[and WORK very hard at it!

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Cheersyoo
Bob