Seems like you have problems with masked compression lately.
Recompress just the last bin file.
1. Move all files out of conversion folder to somewhere else (somewhere out of diskspan_gui folder).
2. Edit DSG_Settings.ini like this
Code:
[Game1Settings]
Name=Starfield
Exec=
EGPath=C:\Program Files\Bethesda Softworks\Starfield
MethodState=1
Data1.Name=Data1e-01.bin
Data1.Method1=xtool:dd3+LOLZ_NORMAL|0
Data1.ExclText=*.ba2|*.bk2|*.esm
3. Open DSG and point to game folder and compress
4. If compression is done, open records.ini and copy the "Size=" key and paste it in old records.ini (from the compression before which gave you an error)
5. Move Data1e-01.bin to the folder which contains the compressed files from before
This should do it.