ok i messed up...
 

ok i downloaded a new theme, and before i had looked at the instructions i messed up and i changed what it was opened with under properties (to java). now it wont work (its in the right folder) and i dont remember what to change it back to, or set it as nothing (which is what i think it was originally). what am i supposed to do? (now all themes i dl automatically are set to open with java)

Go to the file you are trying to open right click on it and choose open with then browse and choose the program you want to open the file with.

no i know how to change it... i accidentally did... thats the problem, i dont know what to change it to now, because it wasnt originally opening with java, originally windows said file type unknown: find program online or select program from a list

... and i have java...

Try opening it with cmd.exe, if it doesnt work, i guess all u can do is trial and error...sorry i cant be of more help