Dear all: i used VBM5.1 under spm5 recently, when i carried out the 'estimate and write' procedure following the VBM5.1 manual, an error message as below occured when 'clean up', it seemed that it resulted from a memory problem. so i'd like to ask you what's the actual reason, and how can i fix this problem? my computer is with a 2G memory, 2.33GHz cpu, and the operation system is Windows XP. and I used the VBM toolbox downloaded from http://dbm.neuro.uni-jena.de/vbm/download/ following is the error message: Error running job: Out of memory. Type HELP MEMORY for your options. In file "H:\matlab\toolbox\spm5\toolbox\vbm5\cg_vbm_write.m" (v716), function "mask_largest_cluster" at line 552. In file "H:\matlab\toolbox\spm5\toolbox\vbm5\cg_vbm_write.m" (v716), function "clean_gwc" at line 615. In file "H:\matlab\toolbox\spm5\toolbox\vbm5\cg_vbm_write.m" (v716), function "vbm_apply" at line 248. In file "H:\matlab\toolbox\spm5\toolbox\vbm5\cg_vbm_write.m" (v716), function "cg_vbm_write" at line 35. In file "H:\matlab\toolbox\spm5\toolbox\vbm5\cg_config_vbm.m" (v424), function "execute_estwrite" at line 729. thank you very much! changmingchen 2009-11-09 chenchangmingswu