Originally Posted by Matt Finley
Gordon, I didn’t want to get into it here, but I did see some info on workarounds to make Windows accommodate larger limits. We can get into that if the large RealTrack files don’t install. I’m waiting for that answer.
Quite right.
I think Andrew's suggestion is probably the place to start. Hopefully that will/has shed more light of what's going wrong.

I'm just doing a search in my /bb directory for .wma files greater than 4Gig. (The OP has UltraPAK, so I'm presuming(!), for now, no big .wav files). --- OK, no .wma file greater than 4G found.. I guess there may be marginal cases close to that, but one imagines not too many.

Edit: For Info: I've just repeated that looking for any file greater than 4Gig. None found, even on an Audiophile installation.

Last edited by Gordon Scott; 16 hours ago.

Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
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