Install errors often on many applications - Google Chrome

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http://forums.opensuse.org – This is becoming frustrating in that when I try to install just about anything I get error messages like this one for installing Google Chrome. [PK_TMP_DIR|dir:///var/tmp/TmpDir.SycEiI] Repository already exists. Does anyone have any suggestions for this specific error or the larger issue for me? Do I need to start cleaning out some instance of cache or other on a regular basis? I am not a Linux person but I am trying. Any help would be appreciated. Thanks! (Distributions)