No, sorry for the confusion. It loads ok as normal but when i go to the library page the display that usually appears is missing the row under the question mark (i think it appears as a row of ticks but not 100% sure). I use the Limewire PRO theme.
Without this function i cannot load anything onto the player.

Sorry if this info doesn't help (I'm not too sure what you mean) - do you mean that the player icon's missing? That's what appears under the ? in my library in 4.18.8. If that whole column's missing, right click on the column header & tick icon.
Click on thumbnail to enlarge the image


If you're seeing a different icon in the ? column than what you normally see, maybe you need to change your default player? See this thread for info: Setting default audio program