我使用
        merge 1:1 varlist using filename [, options]，
提示(pathsplit() in lmatabase, compiled by Stata 11.2, is too new to be run by this version of Stata and so was ignored)
fullfilename(): 3499 pathsplit() not found
<istmt>: - function returned error
但是我进行升级，却没有升级到11.2

请问 1，是升级的原因么
        2，怎么解决