Custom GUI dont work when vst is loaded in Daw

Can you try the latest OSX package available here

Note that to quickly inlcude all the .svg files you need into the bundle when you export as a .vst, you can use the new <CabbageIncludes> tags. They should appear outside of any other tags and can be used to tell Cabbage which files to include. For example

<CabbageIncludes>
test.svg
test1.svg
greatstuff.svg
</CabbageIncludes>

Note that each of the files should be in the same directory as the .csd file for this mechanism to work. Alternatively you can simply drag and drop the files into the Contents folder.