unable to execute query as it's unable write to temporary file

I'm running Informix 7.31 TD2 on win xp and I'm trying to run a select and I get the following error: 264: Could not write to a temporary file. 131: ISAM error: no free disk space The /tmp is set on %USERPROFILE%\\Local Settings\\Temp dir and I have more than 2g of free disk space on that drive. I have no tempdbs setup. Here's the onstat -d: Informix Dynamic Server Version 7.31.TD2 -- On-Line -- Up 01:52:22 -- 430912 Kbytes Dbspaces address number flags fchunk nchunks flags owner name 25d1c150 1 1 1 1 N informix rootdbs 25d1c950 2 1 2 6 N informix ol_dantop 2 active, 2047 maximum Chunks address chk/dbs offset size free bpages flags pathname 25d1c210 1 1 0 7680 1175 PO- C:\\IFMXDATA\\ol_dantop\\rootdbs_dat.000 25d1c380 2 2 0 512000 1 PO- C:\\IFMXDATA\\ol_dantop\\ol_dantop_dat.000 25d1c478 3 2 0 500000 1 PO- d:\\informix\\ol_dantop_dat.001 25d1c570 4 2 0 125000 3 PO- d:\\informix\\rootdbs_dat.001 25d1c668 5 2 0 500000 1029 PO- \\\\danpiv\\chunk\\ol_dantop_dat.003 25d1c760 6 2 0 500000 499997 PO- \\\\danpiv\\chunk\\ol_dantop_dat.002 25d1c858 7 2 0 250000 249997 PO- \\\\danpiv\\chunk\\rootdbs_dat.002 7 active, 2047 maximum It has space in rootdbs so what else should I check for? Thanks!