rctacquisition.py error - Possible subprocess: Permission denied
Added by Michael Cianfrocco almost 10 years ago
Hello,
We have installed leginon and appion here at UCSD, and everything is working without issues.
However, when we tried to use the MSI-RCT application to take an example hole image within the RCT node, the node acquires an image but does not find any features. Instead it displays the error message:
Possible subprocess: Permission denied
We have already changed the permissions on leginon/rctacquisition.py as instructed in the installation manual:
chmod 755 ./leginon/rctacquisition.py
Despite this, we keep getting this error.
What other files do we need to make sure have the correct permissions?
Background info:- We are running CentOS 7
- SELinux is enable (although we get the same error when it is disabled)
Thank you for your help!
Mike
Replies (3)
RE: rctacquisition.py error - Possible subprocess: Permission denied - Added by Anchi Cheng almost 10 years ago
The permission change you did is correct. However, is this the one that Leginon is calling through timedproc ?
Check this way:
Start python command line with
python
type
from leginon import rctacquisition rctacquisition
It should tell you where it is loading the module from. Likely in the python site-packages where the installation is.
RE: rctacquisition.py error - Possible subprocess: Permission denied - Added by Michael Cianfrocco almost 10 years ago
Ah - we should've thought to look in the site-packages folder for the leginon installation. We did find the folder where the rctacquisition.py is installed within this directory.
BUT, after changing the permissions to this file (-rwxr-xr-x), we are still getting this permissions error.
What do you think it could be? Is there another file that needs its permissions changed?
Thanks!
RE: rctacquisition.py error - Possible subprocess: Permission denied - Added by Anchi Cheng almost 10 years ago
The last group of people with this problem went overboard making the whole leginon directory executable. I think you may want to try openCVwrapper.py first.
In addition, check to see openCV is installed properly and functional. See Issue#2912. message 11 in there has the test script.