Can you cut and paste the part of the fahlog.txt that shows where it finished, and then what happened afterwards?
the log should be in your fah folder.
Sometimes, what happens is, a WU has an "early end", ie, something is corrupt in the checksums, or the data upload, and
someone at Stanford has to manually intervene, inspect it, and call it complete, or determine the percentage complete.
That's a safeguard built into the points crediting system, or else some unscrupulous folder would be garbling their workunits about 3 frames into a 600 pointer, and taking credit for a few minutes worth of work.
Here is the "successful" completion of WU 4 and the beginning of WU 5:
[16:31:24] Completed 471275 out of 500000 steps (94)
[16:33:48] Writing checkpoint files
[16:48:57] Writing checkpoint files
[17:00:39] Writing local files
[17:00:39] Completed 475000 out of 500000 steps (95)
[17:04:00] Writing checkpoint files
[17:19:10] Writing checkpoint files
[17:34:14] Writing checkpoint files
[17:37:38] Writing local files
[17:37:38] Completed 480000 out of 500000 steps (96)
[17:49:23] Writing checkpoint files
[18:04:33] Writing checkpoint files
[18:17:53] Writing local files
[18:17:53] Completed 485000 out of 500000 steps (97)
[18:19:39] Writing checkpoint files
[18:34:48] Writing checkpoint files
[18:49:54] Writing checkpoint files
[18:58:30] Writing local files
[18:58:30] Completed 490000 out of 500000 steps (98)
[19:04:57] Writing checkpoint files
[19:20:00] Writing checkpoint files
[19:35:13] Writing checkpoint files
[19:38:53] Writing local files
[19:38:53] Completed 495000 out of 500000 steps (99)
[19:50:20] Writing checkpoint files
[20:05:25] Writing checkpoint files
[20:14:18] Writing local files
[20:14:18] Completed 500000 out of 500000 steps (100)
[20:14:20] Writing checkpoint files
[20:15:20]
[20:15:20] Finished Work Unit:
[20:15:20] Leaving Run
[20:15:22] - Writing 536297 bytes of core data to disk...
[20:15:22] ... Done.
[20:15:22] - Shutting down core
[20:15:22]
[20:15:22] Folding@home Core Shutdown: FINISHED_UNIT
[20:15:24] CoreStatus = 64 (100)
[20:15:24] Sending work to server
[20:15:24] + Attempting to send results
[20:15:37] + Results successfully sent
[20:15:37] Thank you for your contribution to Folding@Home.
[20:15:37] + Number of Units Completed: 4
[20:15:42] - Preparing to get new work unit...
[20:15:42] + Attempting to get work packet
[20:15:42] - Connecting to assignment server
[20:15:42] - Successful: assigned to (171.65.103.158).
[20:15:42] + News From Folding@Home: Welcome to Folding@Home
[20:15:42] Loaded queue successfully.
[20:15:45] + Closed connections
[20:15:45]
[20:15:45] + Processing work unit
[20:15:45] Core required: FahCore_82.exe
[20:15:45] Core found.
[20:15:45] Working on Unit 05 [January 10 20:15:45]
[20:15:45] + Working ...
[20:15:45]
[20:15:45]