I don`t found .uc file

[OrsonMM]

Hi Team BEAR

I have some questions about your program.

1. In the step 2 in the manual BEAR, it use drisse.py command. I use these command and I never get the file .uc I get a file .per and other file without extension.

2. I use the file .per for the step 3 in the manual. It run okey. And return the files .err.qual and err.matr

3. The step 4.a run is okey.

4. The step 4.b in the manual say use trim_reads.py and in your repository exist trim_reads.pl. And when I run the command it always return me error. But apparently it make the trim fastq file.
   But I never seen what sequence was modified with error or base change. It return the same header of sequences.