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File Could Not be Accessed (Data Fork, -39)

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I just got "The file "VTS_06_1.VOB" could not be accessed. (Data fork, -39)" on my MacBook using a firewire drive. This is the first time I have had this message with Popcorn. It had already multiplexed the disc, and was saving a disc image (I never burn directly due to Popcorn and Toast crashing during burns). How does this happen part way through a disc image burn? It must have written the previous data with no problem (it was 37% through writing the disc image)? The error message implies it is trying to read, not to write, either.

 

Once I clicked "OK" on the error message, I got "Couldn't complete the last command because of a Mac OS Error. Result Code = -39".

 

I restarted the encoding and it worked fine(ish). I have a disc image that doesn't use all the disc (even though Popcorn told me it would exceed the size of the disc by about 30%). I added in another video that would fit in, tried saving as a disc image again, and it crashed during multiplexing. I had to re-create all the titles, menus, change the audio tracks where it had got them wrong again and am now burning the disc image again and it has got further than it did when it crashed last time.

 

The crashing isn't great, particularly since (unlike Toast that also crashes) you can't save the set-up for a disc so it remembers what it was burning when it crashed. It would be useful to have reliable software that didn't require you to burn to disc images first (not just for reliability, but to check how much fits on a disc, since Popcorn and Toast don't know how to calculate this properly).

 

I can't determine any causes for the crashes, since they are not reproducible, and only Toast and Popcorn crash on the machine. I have tried three different Macs, with different chips (G4 and Intel), a PowerBook, a MacBook and a PowerMac, but all three are unreliable with Toast and Popcorn, but fully resilient with everything else. The inconsistency in the crashing gives me discomfort, and made me doubt my Macs until I got similar failures on all three. It is a pity that Toast and Popcorn aren't resilient like Roxio's Mac software used to be. It is starting to feel like Windoze software. The user-friendly side is becoming less user-friendly, too - more Windoze-style approaches.

 

I now feel that as soon as a competent alternative to Toast and Popcorn appears on the market, I'm moving to it. If anyone knows how to overcome these intermittent problems and difficulties using the software, I would be pleased to know.

 

By the way, I am running all my Macs as a user, _not_ as an administrative user. I never run as an administrative user for security reasons. Could this be causing the issues? Are Roxio testing only as administrative users?

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