Gaussian was running fine for me but from today onwards I keep getting this error for every calculation I am trying to perform. The error is being shown even on molecules that were successfully calculated previously.

Bad file opened by FileIO: Unit=3 NFiles= 0 MaxFFi= 10000.

FileIO: IOper= 9 IFilNo(1)= 3 Len= 0 IPos= 0 Q= 5138996

dumping /fiocom/, unit = 1 NFiles = 1 SizExt = 524288 WInBlk = 512

defal = T LstWrd = 67072 FType=2 FMxFil=10000

Number 0

Base 20480

End 67072

End1 67072

Wr Pntr 20480

Rd Pntr 20480

Length 46592

dumping /fiocom/, unit = 2 NFiles = 1 SizExt = 0 WInBlk = 512

defal = F LstWrd = 67072 FType=2 FMxFil=10000

Number 0

Base 20480

End 67072

End1 67072

Wr Pntr 20480

Rd Pntr 20480

Length 46592

Error termination in NtrErr:

NtrErr Called from FileIO.