Leginon

Hi, Scott,

There are more than one case of this happening not due to Leginon upgrade but TUI or Gatan software upgrade. Try register tecnaiccd.dll as in Digital Camera NOT found after DigitalMicrograph Re-Insta.... If that fails, try unregister first with

regsrv32 -u ..../tecnaiccd.dll

Does this Gatan GIF control on the scope computer ?

Looking around here at NRAMM, we do have a case that uses comtypes to control gatan camera through tecnaiccd, so it should work.

To answer your other question, yes the camera is on the microscope computer.

win32com which you tested successfully needs comarray to go with.

comtypes is meant to combine the functions of the two.

Unfortunately, there is no way to compile comarray with python27 on XP since two needed macros are in Visual Studio 2008 that Jim and I could not find a source to download any more.

For now, if you want a work around, you have to go back using python 2.5 and win32com+comarray. I can't try it on a real scope now and am waiting to password for installing a simulator.

However, before you give up, could you test comtypes directly for me ? I want to make sure the problem shows up from this simple call.

import comtypes.client
comtypes.client.CreateObject('TecnaiCCD.GatanCamera.2')

Scott, an idea,

Could you check how many tecnaiccd.dll you have on that computer and what their names are? I've noticed that I got multiple when search for "tecnaicdd" on the scope where comtypes works. They also carries version number such 185 and 220.

It could be a version problem. What is the version of Titan software and Gatan DM ?

It took some time, but I now have a virtual machine with Window XP and tecnai simulator and gatan camera simulator at 1.85 version working.

Unfortunately I could not duplicate the error. The Leginon installation works without any problem.

Two things I've noticed:

1. There are two tecnaiccd.dll The one registered is the one in c:\\program file\\gatan\\ditialmicrograph\\plugins\\tecnaiccd.dll

2. comtypes generated files in c:\Python27\Lib\site-packages\comtypes-1.1.1-py2.7.egg\gen files such as
_BE24587C_098....._0_1_0.py and TECNAICCDLib.py when I first try to start gatan.Gatan
This is expected since these gen files makes later loading faster.

Scott, I expect that you just went back to 2.5 to get around the problem. Am I correct ?

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I wonder know how to make " a virtual machine with Window XP and tecnai simulator and gatan camera simulator" for testing.It is because we also have the gatan camera question.

ShinBo,

From the line where the error occur, you are running an old version from 2.2 release. This means your upgrade to 3.0 is not completed on the computer where the camera is. The error is consistent with the error reported in Gatan Issues after Update. Not to this redmine issue.

Sometimes the pyc file does not get updated when the py file is replaced. Remove gatan.pyc at where it is installed on the camera computer may solve your problem.