[Therion] Warning: strange path in scrap

Hello On my therion file, I have a strange error message. Scrap build work find and PDF files are build. Can you explain me this message and how can I correct it ? Thanks Gilbert ####################### metapost log file ######################## This is MetaPost, Version 0.641 (Web2c 7.5.2) (mem=mpost 2004.3.2) 23 AUG 2007 09:27 **data.mp (data.mp [4001] [4002] [4003] [4004] [4005] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [Warning: strange path in scrap pinee5_s3@pinee]