There may be multiple texis.exes for a single walk. Generally at least 2. cururls.PID# being present without it's process generally indicates a problem.
The process for your cururls file died unexpectedly. I would expect to see something in vortex.log about it exiting or something in the walk status. If neither of those I'd have to guess that the OS is killing the process without giving it a change to close out. Does event viewer say anything about it?
cururls.### is a file, not a process. The ### is the process id (PID) of texis.exe that created that file.
Look in vortex.log and process list for the PID, not "cururls".