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Can't Open Files Saved Back to TC2017 from TC2018
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August 13, 2018, 05:33:43 PM
I can't seem to open a file in TC 2017 that has been saved back from TC 2018. LightWorks materials don't transfer and then the program crashed just before it opens. Is anyone else experiencing this?

* August 13, 2018, 07:43:03 PM
I get a similar experience with 2018 Deluxe back to 2017 Deluxe. "Invalid material" notices during loading, but no crashing. My "Active Drawing" list in 2017 is empty. My guess is that they never wrote the code to change materials for the 2018 versions (LW 9020300 and RW 4024100) back to earlier versions; such as 2017 (LW 8030300 and RW 4024100).

John R.

V17—V21, 2015—2018
Designer, Deluxe, Expert, Basic, Platinum
RedSDK enabled
Windows 10 Pro, 64-bit

* August 14, 2018, 01:07:59 AM
I had mixed results using RedSDK in 2018 and 2017.   

The first test, the first was a 25Mb file with lots of materials, it did not crash, but every object which had a material applied in 2018, vanished, so saving the file in 2017 went from 25Mb down to 258k. 

The second test (a simple cylinder added to a cube),  if an object has part tree information, it survives the process, but if it is just listed as an ACIS solid, it vanishes,  though those which survives,  in 2017 it locks the object as far as materials go, so I cannot add materials, at least until I explode the part tree back to an ACIS solid, then I can add materials.

Not good really. as a side note - saving as a .sat (ACIS) file, allows all the objects to survive, it just wipes off the materials.
« Last Edit: August 14, 2018, 01:17:16 AM by Andy H »


August 14, 2018, 07:58:55 AM
Thanks John, thanks Andy, for the confirmation of issues. I wonder if we will ever see it fixed?

* August 14, 2018, 08:30:41 AM
For me it was the same as John, no crash but also no material.


V18, V19, V20, V21, 2015/ 16/ 17/ 18 Pro. Platinum
Deluxe V20, V21, 2015/ 16/ 17
RedSDK enabled
Windows 10 Home Premium 64 bit, 32 GB
NVIDIA Geforce GTX 780m, 1 GB