NewLaunchManager Protocol Browser Error

olfactorybehaviorlab

Hi,

I'm running into a strange error when clicking the "play" button and the launch manager opens. I am getting the below error, and the protocol list disappears. This occurs whether there are files/folders present or not.

» Index exceeds the number of array elements. Index must not exceed 1.

Error in NewLaunchManager (line 129)
    SelectedProtocolName = ProtocolNames{SelectedProtocol};

Error in RunProtocol (line 171)
            NewLaunchManager;
 
Error while evaluating UIControl Callback.

» Warning: Single-selection 'listbox' control requires that 'Value' be an integer within Character vector range
Control will not be rendered until all of its parameter values are valid

The below then happens if you try to click in the area the protocol browser was in.

» Unrecognized field name "ProtocolSelectorLastValue".

Error in NewLaunchManager>ProtocolSelectorNavigate (line 157)
if currentValue == BpodSystem.GUIData.ProtocolSelectorLastValue
 
Error while evaluating UIControl Callback.

I'm gonna try to work on troubleshooting it this weekend. But not sure if or when I can do that. Just curious if you've seen this already.

Best,
Austin

Josh

Hello Austin,

It's odd that execution gets to line 129 when the folders are absent - it should instead follow the first block of the if/else on line 104:
if isempty(BpodSystem.Path.ProtocolFolder)

From the Bpod Console GUI, if you click the settings (wrench) icon and then the folder icon, is the protocol folder correct?

Also, what MATLAB version are you using?

Thanks,

-Josh

olfactorybehaviorlab

Hi Josh,

The folders are correct, and in a location where it should not have access issues. I just tried placing the protocols folder on the desktop and got the same result. Were on R2022a Update 5 currently. I've been planning to update to 2023b, so may try that later and see if it helps.

Best,
Austin

Josh

Hello Austin,

If you put a breakpoint on line 272 of NewLaunchManager.m and type ProtocolNames in the Bpod command window, what does it show?

It's possible that the software is having trouble parsing BpodSystem.Path.ProtocolFolder. Can you please share the full path to your protocol folder?

I can assist with debugging - please write to support@sanworks.io and we'll schedule a remote support session.

-Josh

olfactorybehaviorlab

Josh

I found the problem.

On line 236, it instantiates ProtocolNames as a cell of length one. Since there are no candidates, we skip over that block.
On line 259, isempty(ProtocolNames) actually returns true since it is instantiated to a length of 1.
The fix is simply to change 236 to ProtocolNames = cell(0);

I'll send a pull request in for this one. I already submitted another one for another error I found when trying to close the GUI if the BPOD was disconnected early. I think I accidentally requested it on the main branch, this one will go to the dev branch. Not sure how yall handle contributions. But i'll put it there just so its easy for you to find.

Josh

Awesome, thanks for debugging this! I just merged the pull request into develop. We'll have a version release in the next few days.

Thank you!

-Josh