Error in <Preparing the transcripts annotation files> step

[yuechaowu]

ribocode was installed by conda and run in python2.7 env.
when i run this command prepare_transcripts -g ~/data/reference/IRGSP/IRGSP.gtf -f ~/data/reference/IRGSP/IRGSP.fa -o annotation/

then i get fellow error:
Traceback (most recent call last):
File "/home/wuyuechao/data/bio-tools/anaconda3/envs/ribocode/bin/prepare_transcripts", line 10, in
sys.exit(main())
File "/home/wuyuechao/data/bio-tools/anaconda3/envs/ribocode/lib/python2.7/site-packages/RiboCode/prepare_transcripts.py", line 388, in main
processTranscripts(args.genomeFasta,args.gtfFile,args.out_dir)
File "/home/wuyuechao/data/bio-tools/anaconda3/envs/ribocode/lib/python2.7/site-packages/RiboCode/prepare_transcripts.py", line 311, in processTranscripts
genomic_seq = GenomeSeq(genomeFasta)
File "/home/wuyuechao/data/bio-tools/anaconda3/envs/ribocode/lib/python2.7/site-packages/RiboCode/prepare_transcripts.py", line 205, in init
self.fh = Fasta(filename, key_fn = get_chrom)
File "/home/wuyuechao/data/bio-tools/anaconda3/envs/ribocode/lib/python2.7/site-packages/pyfasta/fasta.py", line 73, in init
flatten_inplace)
File "/home/wuyuechao/data/bio-tools/anaconda3/envs/ribocode/lib/python2.7/site-packages/pyfasta/records.py", line 48, in prepare
idx = cPickle.load(fh)
ValueError: unsupported pickle protocol: 4

please help thx!

[yuechaowu]

in my situation,need create an new conda env and definite python version
conda create -n ribocode python=3.5
conda activate ribocode
conda install ribocode
error is solved:)