What steps will reproduce the problem?
1. ./gentags.py will report error (it uses /usr/bin/python24 )
2. python gentags.py will report many errors like below:
Crawling source files.
generating tag file: TAGS
generating tag file: TAGSC
xargs: ./rtags.py: No such file or directory
No java files found. Skipping JTAGSC generation.
generating tag file: PTAGS
No java files found. Skipping JTAGS generation.
generating tag file: PTAGSC
xargs: ./rtags.py: No such file or directory
translating tag file: cpp.tags
./etags_to_tags.py --language=c++ --nocallers --corpus_name=cpp.tags
--input_file=TAGS --output_file=- --base_path= | gzip > cpp.tags.gz
sh: ./etags_to_tags.py: not found
translating tag file: cpp.callers.tags
./etags_to_tags.py --language=c++ --callers --corpus_name=cpp.callers.tags
--input_file=TAGSC --output_file=- --base_path= | gzip > cpp.callers.tags.gz
sh: ./etags_to_tags.py: not found
translating tag file: python.tags
./etags_to_tags.py --language=python --nocallers --corpus_name=python.tags
--input_file=PTAGS --output_file=- --base_path= | gzip > python.tags.gz
sh: ./etags_to_tags.py: not found
No java files found. Skipping java.callers.tags translation.
No java files found. Skipping java.tags translation.
translating tag file: python.callers.tags
./etags_to_tags.py --language=python --callers
--corpus_name=python.callers.tags --input_file=PTAGSC --output_file=-
--base_path= | gzip > python.callers.tags.gz
sh: ./etags_to_tags.py: not found

What is the expected output? What do you see instead?
I don't know what to expect. I just saw above errors.

What version of the product are you using? On what operating system?
Linux ubuntu 64.

Please provide any additional information below.