file photon/cbddlp converted to cbt not printed

[winso2018]

cbddlp file (printed by old chituboard EPAX-X1), converted to cbt by uv3dp-v0.5.3, not printed on new chituboard (firmware 4.3.4, printer EPAX-X1-N). printer speak "unknown file". No preview image on screen
converted cbt file opened by chitubox 1.6.4.3
command line:
uv3dp.exe w1.cbddlp wk.ctb
Convert sliced (printed ok) ctb file to ctb - new ctb not printable.
uv3dp.exe _TEST_2018_01.ctb _TEST_2018_01XX.ctb
file - difefrent
187 119 bytes _TEST_2018_01.ctb
164 257 bytes _TEST_2018_01XX.ctb
ctb_to_ctb.zip
Why? What to do? What way to convert old (printed) cbddlp to new (printable) .ctb file?

[winso2018]

i compare 2 file _TEST_2018_01.ctb original and _TEST_2018_01XX.ctb converted by catibo-inspect
all found difference on pic

left original - right converted
what to fix?

[winso2018]

sorry, i analyse by catibo-inspect and found solution.
i minor update ctb/format.go with

header := ctbHeader{
	Magic:          defaultHeaderMagic,
	Version:        2,
	EncryptionSeed: 3092495361, // old = 0 // Force encryption off, so we can de-duplicate layers
}

.....
machineBase := slicerBase + uint32(slicerSize)
machine := "EPAX X1"
machineSize := len(machine)
......
// ctbSlicer
param.Unknown38 = 0x1234
slicer.MachineOffset = machineBase
slicer.MachineSize = uint32(machineSize)
slicer.EncryptionMode = 7 // old 0xf // Magic!
slicer.TimeSeconds = 26494107
slicer.ChiTuBoxVersion[0] = 1 // Magic!
slicer.ChiTuBoxVersion[1] = 6
slicer.ChiTuBoxVersion[2] = 4
slicer.ChiTuBoxVersion[3] = 3
slicer.Unknown34 = 0 // old 0x200 // Magic?
slicer.Unknown2C = 1 // OLD - NO. aNTIALIASING? // 2c: Always 1?
.....
now, converted file printable.
Thanks for code!!!

[ezrec]

Thanks for the bug report!

Is it printable if EncryptionSeed=0, but keeping the rest of those changes?

(Which is what I’d prefer, since it allows for much smaller file size for mechanical prints by using the same image for multiple layers)

[winso2018]

not. if EncryptionSeed=0 - printer report "unknown format"
now i convert and test 17 cbddlp to ctb. all work fine

[ezrec]

Should be fixed in release v0.5.5

[X3msnake]

great work Masters No dia domingo, 17 de maio de 2020, Jason S. McMullan < notifications@github.com> escreveu:

…

Should be fixed in release v0.5.5 — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#41 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACUR56Q6QFM3VX4DYENQBCDRR7SIXANCNFSM4NDCI73Q> .

-- Com os melhores cumprimentos, Vinicius Silva