problem solved for me , everything back to normal with GSXL2 after the following steps :
- i changed the Exclude XML file
- Recreate the shader cache and sceneryindexes,
- Check the "Disable RTT" option in the Addon Manager
- restore the default jetways via GSX control panel
but i liked the idea of disable default jetways cuz it adds jetways for all default airports that has not jetways by default , i hope that there is no problem of disable default jetways