Fail to install extension (zxp) on Mac

Hello,

i have create a zxp out of some files with a *.mxi file.

i am able to install the zxp file on windows 10 computer but on mac the CEP part always copied to CEPServiceManager4/extensions/...

can anybody find the error?

this is the mxi file:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>  
<macromedia-extension id="com.xxx.xxx" name="XXX" requires-restart="true" version="1.0.0">  
  <author name="xxx" />  
  <description>The extension xxx</description>  
  <license-agreement>
  </license-agreement>
  <products>  
    <product familyname="Photoshop" maxversion="30.0" version="19.0"/>  
  </products>  
  <files>  
    <file destination="$adobecommon/CEP/extensions" 
      file-type="CSXS" 
  source="UI.zxp" />  
    <file destination="$pluginsfolder/xxxx" 
  minVersion="18.0" 
  platform="mac" 
  file-type="plugin"
  products="Photoshop" 
  source="plugin/mac/xxxxCommon.plugin "/>  
    <file destination="$pluginsfolder/Extensions"  
  minVersion="18.0" 
  file-type="plugin"
  platform="win" 
  products="Photoshop64" 
  source="plugin/win/x64/xxxxxCommon.8bs" />  
  </files>  
</macromedia-extension>  

here is the ExManCoreLibrary.log

[Warning] Tue Apr 24 20:52:30.305 2018 (SignatureValidator.cpp, 170) -CSignatureValidator::verifySignature: timestamp is invalid!

[Error] Tue Apr 24 20:52:30.313 2018 (BridgeTalkWrapper.cpp, 208) -Failed to parse the product running state xml, exception is "SAXParseException: No element found in line 1 column 0"!

[Error] Tue Apr 24 20:52:30.313 2018 (BridgeTalkWrapper.cpp, 153) -parseProductRunningState() failed, status is -265!

[Error] Tue Apr 24 20:52:35.148 2018 (FileOperation.cpp, 438) -Failed to copy file "/var/folders/cz/sf_mxm615c3gxdv9svht2hgw0000gn/T/tmp1825daaaaa/plugin/mac/xxxCommon.plugin" to "/Applications/Adobe Photoshop CC 2018/Plug-Ins/xxx/xxxCommon.plugin".

[Error] Tue Apr 24 20:52:35.156 2018 (FileOperation.cpp, 438) -Failed to copy file "/var/folders/cz/sf_mxm615c3gxdv9svht2hgw0000gn/T/tmp1825eaaaaa" to "/Library/Application Support/Adobe/CEPServiceManager4/extensions/com.xxxx.xxxx".