permission issue

[giovannicono]

When I try to use the manual importing of the CT-scan I get this permission error, but I don't figure out why:

File "c:\OrtogOnBlender\Blender291\2.91\scripts\addons\OrtogOnBlender-master\GeraModelosTomo.py", line 4681, in execute
GeraModelosTomoManualDef(self, context)
File "c:\OrtogOnBlender\Blender291\2.91\scripts\addons\OrtogOnBlender-master\GeraModelosTomo.py", line 4524, in GeraModelosTomoManualDef
ds = pydicom.dcmread(ArqAtual, force=True)
File "c:\OrtogOnBlender\Blender291\2.91\python\lib\site-packages\pydicom\filereader.py", line 856, in dcmread
fp = open(fp, 'rb')
PermissionError: [Errno 13] Permission denied: '81'

location: :-1

[adalbertobrant]

HI @giovannicono.

Are you using windows and have the necessary permissions ? 
When you in the prompt in windows terminal and use :

`icalcs 81` as 81 is the name of the file what is the result ?

Maybe you should use `icacls 81 /grant:r <USER_NAME>:R`