I downloaded the RNAhybrid (Windows 32bit) and open in MS-DOS command line. I tried the commands [C:\...\RNAhybrid-2.1.2>RNAhybrid -F -b 5 -r -o 1 -p 0.01 -t target.fasta -q miRNA.fasta] for target prediction to analysis my custom files (miRNA and mRNA transcript fasta format). But I got the error message like Unknown option --F, --r, --o; Unknown set name aborting etc., Kindly send the exact command to execute the RNAhybrid analysis.