core.Layout.save(layout,outfile) not working about gdscad HOT 3 CLOSED

after a successful import, the saving doesn't work without making any changes to the gds.
a hierarchical gds will fail in line 1857, while a flat one will fail in 736.

import correctly
Writing the following cells
IGA_AI_124_A_PR_childs: Cell ("IGA_AI_124_A_PR_childs", 0 elements, 3 references)
WIRE_CELL: Cell ("WIRE_CELL", 31302 elements, 0 references)
inter_otft_AI_v_w65_l6_nf5: Cell ("inter_otft_AI_v_w65_l6_nf5", 602 elements, 0 references)
pad_iga_matrix: Cell ("pad_iga_matrix", 87264 elements, 42 references)
IGA_SAMPLE: Cell ("IGA_SAMPLE", 8 elements, 100 references)
PAD_IGA: Cell ("PAD_IGA", 404 elements, 0 references)
SQ_OTFT_AI_124_A: Cell ("SQ_OTFT_AI_124_A", 0 elements, 126 references)
inter_otft_AI_v_w40_l6_nf4: Cell ("inter_otft_AI_v_w40_l6_nf4", 1075 elements, 0 references)
VERTICAL: Cell ("VERTICAL", 4071 elements, 0 references)
IGA_PAS1: Cell ("IGA_PAS1", 504 elements, 0 references)
inter_otft_AI_v_w80_l6_nf8: Cell ("inter_otft_AI_v_w80_l6_nf8", 1388 elements, 0 references)
Traceback (most recent call last):
File "gdsCAD_tests.py", line 31, in
prt = core.Layout.save(importedgds, 'gdsCAD_outfile.gds')
File "C:\Python27\lib\site-packages\gdscad-0.5.0-py2.7.egg\gdsCAD\core.py", line 1325, in save
outfile.write(cell.to_gds(self.unit / self.precision, duplicates))
File "C:\Python27\lib\site-packages\gdscad-0.5.0-py2.7.egg\gdsCAD\core.py", line 1489, in to_gds
data += element.to_gds(multiplier, duplicates)
File "C:\Python27\lib\site-packages\gdscad-0.5.0-py2.7.egg\gdsCAD\core.py", line 1857, in to_gds
return data + struct.pack('>2h2l2h', 12, 0x1003, int(round(self.origin[0] * multiplier)), int(round(self.origin[1] * multiplier)), 4, 0x1100)
struct.error: integer out of range for 'l' format code

from gdscad.

also a different error is that if the gds has no text layout objects at all, core.Layout.save(layout,outfile) will fail in line 723 (core.py), since len(text) won't work when text is trying to be substituted by object 'NoneType'.

from gdscad.

The last commented error was due to a gds layout that had undesired empty text elements inserted by the layout tool. Once eliminated the errors in the gds then core.Layout.save(layout,outfile) worked fine.
The other error was also related to the exporting of the gds by the layout tool. This was saving the date data incorrectly (out of range). I used another tool for exporting the gds and again it worked fine.

from gdscad.