ScanStudio: Film needs to be reloaded (REFEED_REQUIRED)

[julianmkan]

ScanStudio error report
ScanStudio version: 0.3.0-beta.3
Operating system: macOS Version 15.7.3 (Build 24G419)
CPU architecture: arm64
Scanner firmware: bridge 0.1.0
Adapter: unknown
Holder: unknown
Local log: ~/.scanstudio/diagnostics/8cff5ae5-697a-4b0b-9af5-f6aa4eee79a7.jsonl
Diagnostic session: 8cff5ae5-697a-4b0b-9af5-f6aa4eee79a7
Engine version: 0.1.0
Connection state: uiConnected=true; deviceKind=real; previewActive=false; scanActive=false; transport=idle
Error code: REFEED_REQUIRED

Message:
REFEED_REQUIRED: transport read was not one uniform traversal; eject or refeed the strip and run the preview again -- if this recurs on clean feeds it may be a capture or driver defect (terminal padding does not begin with the expected blank row record)

Recent diagnostic events:

• 2026-08-07T15:40:22Z session.started
• 2026-08-07T15:40:22Z device.discovery.succeeded count=2
• 2026-08-07T15:40:25Z device.connect.requested kind=real uiConnectedBefore=false
• 2026-08-07T15:40:25Z scanner.status connected=true filmPresent=true mediaLoaded=false transport=idle
• 2026-08-07T15:40:25Z device.connect.succeeded connected=true kind=real mediaLoaded=false transport=idle
• 2026-08-07T15:40:26Z scanner.status connected=true filmPresent=true mediaLoaded=false transport=idle
• 2026-08-07T15:40:29Z preview.requested kind=initial process=c41ColorNegative uiConnected=true
• 2026-08-07T15:40:29Z preview.accepted uiConnected=true
• 2026-08-07T15:40:30Z preview.failed code=INTERNAL uiConnectedBefore=true
• 2026-08-07T15:40:30Z scanner.status connected=true filmPresent=true mediaLoaded=false transport=idle
• 2026-08-07T15:41:34Z preview.requested kind=refreshSavedProject process=c41ColorNegative uiConnected=true
• 2026-08-07T15:41:34Z preview.accepted uiConnected=true
• 2026-08-07T15:41:50Z preview.failed code=REFEED_REQUIRED uiConnectedBefore=true
• 2026-08-07T15:41:50Z scanner.status connected=true filmPresent=true mediaLoaded=false transport=idle

No images, receipts, or raw logs are attached automatically.

[rohanpandula]

thanks for filing this separately, it looks like the same error as your other report but its a different refusal underneath. here the preview streams terminal padding record didnt start with the blank row the decoder requires, so indexing refused rather than risk mis-addressing frames. ive seen padding details vary with scanner state so i want to know what state yours was in.

two asks:

• the diagnostics file from this session: ~/.scanstudio/diagnostics/8cff5ae5-697a-4b0b-9af5-f6aa4eee79a7.jsonl
• what happened between your 14:51 session and this 15:40 one? did the strip stay loaded, did you eject and refeed, did the scanner power off at any point

separately, your first preview attempt in this session died with INTERNAL before the refeed message showed up on the retry. thats a third thing and the log above should show it. if the app told you nothing useful at that moment that alone is a bug i wanna fix