KeyError: '1002296'

[Deleted user]

I am using gemini version gemini 0.30.2, and get the following error:

Traceback (most recent call last):
File "/home/merpos/bin/gemini", line 7, in
gemini_main.main()
File "/home/merpos/gemini/anaconda/lib/python2.7/site-packages/gemini/gemini_main.py", line 1249, in main
args.func(parser, args)
File "/home/merpos/gemini/anaconda/lib/python2.7/site-packages/gemini/gemini_main.py", line 439, in query_fn
gemini_query.query(parser, args)
File "/home/merpos/gemini/anaconda/lib/python2.7/site-packages/gemini/gemini_query.py", line 169, in query
run_query(args)
File "/home/merpos/gemini/anaconda/lib/python2.7/site-packages/gemini/gemini_query.py", line 135, in run_query
gene_needed, args.show_families, subjects=subjects)
File "/home/merpos/gemini/anaconda/lib/python2.7/site-packages/gemini/GeminiQuery.py", line 653, in run
self.result_proxy = res = iter(self._apply_query())
File "/home/merpos/gemini/anaconda/lib/python2.7/site-packages/gemini/GeminiQuery.py", line 902, in _apply_query
self._split_select()
File "/home/merpos/gemini/anaconda/lib/python2.7/site-packages/gemini/GeminiQuery.py", line 1257, in _split_select
new_col = self._correct_genotype_col(token)
File "/home/merpos/gemini/anaconda/lib/python2.7/site-packages/gemini/GeminiQuery.py", line 948, in _correct_genotype_col
corrected = "%s[%d]" % (column.lower(), self.sample_to_idx[sample])
KeyError: '1002296'

What does the number of the KeyError mean? Can I find an overview of this somewhere?

Thanks!