If this is not so, can you please locate three files URL2s.dat, URL2s.blb and URL2s.idx and remove them from the disk.
This should help.
I`m using version 3.5.1904 (SR1) so that shouldn`t be a problem and I`ve located the URL2s.* files and deleted them. However, in files that I`ve previously downloaded with OE I still have many (5,100) .primary files out of a total of ~113,000 files. Furthermore, when I try to update the temporary files the parsing process never completes itself. It either stops after several hours ...or I get tired of waiting after a few days and cancel it myself. Any suggestions?