Hi All, Recently we've been having some issues with our motion sensors not working (any of them) and some other intermittent issues. In the past to resolve this we've restored the modem (plm). But when I try to do that now, it gets to about 7% and then fails with an error message: Could not read config file [./FILES/CONF/50B976.REC]. The device that seems to be an issue (50.B9.76) is a Dual Band SwitchLinc On/Off switch (2477S) and it seems to be working fine, although if I try to restore that device I get the same error.

Any suggestions on how to resolve this?

Edited December 9Dec 9 by DGG

Is this with an eisy, it sounds like an isy problem?

It looks be the sd card if going bad. You can remove it and try running an eraser over the contacts and cleaning with alcohol.

If you search the forums for SD card you should find more detailed info. Also it may be time to replace the SD card

Edited December 9Dec 9 by paulbates

I disabled the switch and then I was able to restore the PLM. Still not sure what's going on with that switch.

The error means that the ISY's definition file for that switch, /FILES/CONF/50B976.REC, has become corrupted or otherwise unreadable by iox, so it does not have definition/reference for it on your system. Likely nothing is wrong with the switch.

If you have an ISY with an SD card for its hard drive, likely that's going bad. If you have an eisy, something happened to that that file and it needs to be replaced, by a recent restore if you have it.

Edited December 10Dec 10 by paulbates

Is the only way to recover from the bad file is an eisy restore? There must be some way to get the eisy to re-read switch data?

You can delete the switch from the ISY and re-add it. Caveats are:

• if the switch is in scenes, in which case the switch will need to be re-added to the scene(s).

• Likely you'll have to go back to iox programs that referenced the original switch and re-add it if necessary

Also, another method of copying the file. isy backups are bunch of zipped folders which follow the path of the file in question here. The individual file could be copied out of the backup and moved to the eisy. Here are high level directions (off the top of my head):

• Take a copy of a backup file, open it in a zip app and navigate to the file location

• Copy/unzip the file to the local storage of the machine you're restoring

• SSH into the eisy, use that or SCP, etc to copy the file to the right location in the eisy

• Reboot the eisy

On 12/10/2025 at 9:46 PM, paulbates said:

You can delete the switch from the ISY and re-add it. Caveats are:

• if the switch is in scenes, in which case the switch will need to be re-added to the scene(s).

• Likely you'll have to go back to iox programs that referenced the original switch and re-add it if necessary

I'll give this a try, thanks!