ERROR: Unable to establish a conversation with server (err=0x400a).
Luochenghuang opened this issue · 5 comments
Hi devs,
This package looks perfect for my project. However I'm unable to get it to work.
When I run
>>> import pyzdde.zdde as pyz
>>> ln = pyz.createLink()
I get an error.
ERROR: Unable to establish a conversation with server (err=0x400a).
ZEMAX may not be running!
Could not initiate instance.
I do have a Zemax instance open running on 19.8 professional version.
Here's pip freeze result:
pywin32==227
PyZDDE==2.0.3
I'm running on Python 3.7.4
Also, I'm able to run the Zemax Python API.
Any help is appreciated!
Hi @Luochenghuang,
Sorry for the delayed reply, I hoped you managed to fix your problem. I cannot replicate this issue. Did you see this issue, it might be a subscription issue. YOu could also try to use the ZOS-API for your project, there is a package here that handles the basics, but is not fully developped. I have worked with this API as well, and I'm happy to help you.
Regards,
Luc
Do you have 19.8 or 19.8 SP1? @JohnDGriffith, is this the error you got as well?
Hi @LucVV,
Thank you for the help! I just updated Zemax to 20.1.3 and PyZDDE magically started working! Thank you for the advice!
Best,
Huang
Glad to hear! Just as a note, the newer features of Zemax might not be available through PyZDDE, as they dropped their support for the DDE. With that, also new bugs are not fixed. One known bug is not with zSetField, as I indicated here. It is fixed in the online version of PyZDDE, but not yet in the latest release. If you find any other bugs, please let me know!
That's great to know, thank you for the help @LucVV !