sd card not supported after flashing rom

hello
i have lenovo s920 row model and i had flashed it by ROM which i download from the below site
http://androidxda.com/download-lenovo-stock-rom-models
but after flashing i face one problem everything is working but when i open the camera or file browser than it will show the "sd card not inserted" so how can i solve i try but i can't get it right i hope xda can help me.