# How to use Logic Pro X instead of Reaper64 for debugging VST3

**URL:** <https://iplug2.discourse.group/t/how-to-use-logic-pro-x-instead-of-reaper64-for-debugging-vst3/929>\
**Category:** macOS\
**Created:** [13 August 2024 02:25 UTC](https://iplug2.discourse.group/t/how-to-use-logic-pro-x-instead-of-reaper64-for-debugging-vst3/929 "2024-08-13T02:25:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jcrai3](https://avatars.discourse-cdn.com/v4/letter/j/9d8465/32.png) [@jcrai3](https://iplug2.discourse.group/u/jcrai3)\
**Post date:** [13 August 2024 02:25 UTC](https://iplug2.discourse.group/t/how-to-use-logic-pro-x-instead-of-reaper64-for-debugging-vst3/929/1 "2024-08-13T02:25:27Z")

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Hi, I am new to VST development and am following along with the IPlug2 tutorial. I am able to get the example plug-in built as an app and as a VST3 in Reaper. My DAW of choice is Logic and I don’t have the full version of Reaper so I would prefer to use Logic to debug. I have been trying to run the example VST3 in Logic instead of Reaper, but have had no success.

I saw on another forum that you should use “AUHostingServiceXPC\_arrow” in “Attach to Process by PID or Name” under the Debug menu. Even after doing this, it still is not working. When I go to build the VST in Logic, I get a pop-up saying that the file cannot be opened.

Attached is the pop-up I am getting from Logic:

 ![Screenshot 2024-08-12 at 7.18.59 PM](https://global.discourse-cdn.com/free1/uploads/iplug2/original/1X/8738f258e2889ebfe9031049e7a160b1d0b3393b.jpeg)

Also, where will the VST3 be located within the project file once it is built? I’m having trouble locating It to just manually place it in the plug-in folder for Logic to access.

Thank you for any possible solutions it is much appreciated!

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**Author:** ![RexMartin2](https://avatars.discourse-cdn.com/v4/letter/r/da6949/32.png) [@RexMartin2](https://iplug2.discourse.group/u/RexMartin2)\
**Post date:** [13 August 2024 16:16 UTC](https://iplug2.discourse.group/t/how-to-use-logic-pro-x-instead-of-reaper64-for-debugging-vst3/929/2 "2024-08-13T16:16:56Z")

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You can’t. Logic doesn’t load VST3 plugins, only Audio Unit (AU).