# Cannot build AT9 for PSVita on FMOD Studio
**URL:** https://qa.fmod.com/t/cannot-build-at9-for-psvita-on-fmod-studio/13044
**Category:** FMOD Studio
**Created:** [March 17, 2017, 8:40am UTC](https://qa.fmod.com/t/cannot-build-at9-for-psvita-on-fmod-studio/13044 "2017-03-17T08:40:08Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@RorschachPuss\_DJ](https://qa.fmod.com/u/RorschachPuss_DJ)
#### Post date: [March 17, 2017, 8:40am UTC](https://qa.fmod.com/t/cannot-build-at9-for-psvita-on-fmod-studio/13044/1 "2017-03-17T08:40:08Z")
I’m having difficulty trying to build banks with AT9 codec for PS Vita. FMOD Studio gave me an error telling me it needs libatrac964.dll, but I can’t find the DLL under that name. I can only find libatrac9.dll in my Sony SDK. When I renamed the DLL as libatrac964.dll and tried building again, FMOD Studio gave me a different error, telling me that each event passes an invalid parameter. I assume it is looking for an old version of ATRAC9 library?
The libatrac9.dll works when I build banks for PS4.
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### Author:  [@Andrew](https://qa.fmod.com/u/Andrew)
#### Post date: [March 22, 2017, 2:39am UTC](https://qa.fmod.com/t/cannot-build-at9-for-psvita-on-fmod-studio/13044/2 "2017-03-22T02:39:41Z")
Hi Daniel, let’s take this to [support@fmod.org](mailto:support@fmod.org) as we’re discussing Sony stuff.