Student in need of help! Can't launch modelsim anymore!

Hello! New to the forums here, I was hoping someone might have the fix to my issue! I had modelsim Quartus II starter edition running well for the past 2 weeks, and now I get this error upon start up!

list must have an even number of elements

while executing

"GUIMAIN"

invoked from within "if{[batch_mode]}{

BATCHMAIN

}else{

GUIMAIN

}"

invoked from within

"ncFyP12-+"

(file"C:\altera\11.1\modelsim_ase\win32aloem/../tcl/vsim/vsim" line 1)

I followed the path, but I'm not sure what I'm looking for..