rctacquisition.py error - Possible subprocess: Permission denied
Added by Michael Cianfrocco almost 9 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 9 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 9 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 9 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.