This posting is older than 6 months and can contain outdated information.
Tried a couple of other versions of the info.plist
One where I only changed DTPlatformBuild and DTXcodeBuild and one as below
Both with no luck
Although I am now officially out of my depth :)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>BuildMachineOSBuild</key>
<string>10K549</string>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>CFBundleExecutable</key>
<string>Plex</string>
<key>CFBundleIdentifier</key>
<string>com.iospiritgmbh.scriptedbehaviours.plex</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>Plex</string>
<key>CFBundlePackageType</key>
<string>BNDL</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>1.165</string>
<key>DTCompiler</key>
<string>4.0</string>
<key>DTPlatformBuild</key>
<string>4D199</string>
<key>DTPlatformVersion</key>
<string>GM/string>
<key>DTSDKBuild</key>
<string>10K549</string>
<key>DTSDKName</key>
<string>macosx10.6</string>
<key>DTXcode</key>
<string>0420</string>
<key>DTXcodeBuild</key>
<string>4D199</string>
<key>NSPrincipalClass</key>
<string>BehaviourPlex</string>
</dict>
</plist>