Okay, a compatibility layer for clients of 0.9.15 version (not sure about old versions, as I removed all compatibility hacks for older versions previously)
<?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>get-task-allow</key>
<true/>
</dict>
</plist>