Hi Rich,

"Get buffer size function failed" generally means that you've selected the ASIO driver for an interface that isn't connected to the computer. The driver is trying to connect to the device, and isn't able to. I'd just stick to the Tascam's ASIO driver for now, since the PodXT is an older legacy product. What happens when you select the Tascam's ASIO driver, and which specific model by Tascam are you using?

Regarding Waves Codex, it's a great synth (I love wavetables), but Waves plugins aren't currently supported by our software without using a third party utility. Most plugins have a DLL file for each individual plugin, but Waves use one Shell DLL that connects to all the Waves plugins you have installed. You'll generally find that they only work with the hosts listed as supported on their website:

https://www.waves.com/support/tech-specs/supported-hosts

You may be able to get it working using Shell2VST, but we haven't tested this in-house.

Thanks
Kent
PG Music