I have a big android project in unity but now unity code compiler does not recognize operator and give me error for compiling and also in MonoDevelop auto complete feature does not work and the biggest problem is that the compiler recognize some float variables as object ! or something like this please help me , my project is very big !
More of a suggestion : get visual studio and link it with Unity.
Works better and with plugin on vs for unity, you can even keep an eye on your variable as well as obvious break points.
Anyhow, you may be using some names for your variables that unity has, though unlikely that you maybe using often used names like gameObject. I really recommend that you get a better editor.