Changes in Code.builder not saving

OS (Win7):
PsychoPy version (e.g. v3.03):

What are you trying to achieve?:
We are having an issue where sometimes when we try to edit or add something to the Code.builder in the psychopy experiment it does not save what we have changed. When we try to open the code builder again everything we have changed disappears. This problem doesn’t happen all the time, it can be working ok one second and then we try something else and the problem repeats itself. We have no way of knowing when it will work and when it won’t.

What did you try to make it work?:
We tried editing the experiment on a different computer and this doesn’t seem to help.

We are wondering if there is something we need to change in our settings- or is it maybe a problem with the version of psycho-py.

What specifically went wrong when you tried that?:
In the dialog box the error message is

Hi @DSP123, it looks like an issue with the disable component function. Was the task created on a newer version of PsychoPy and opened with an older version? If not, would you mind sharing the task so I can take a look? Alternatively, you could try upgrading PsychoPy, since we are on version 3.2.4 and there have since been many improvements to the software.

Thank you for the quick reply.

It turned out to be the version. The experiment was created in a newer version of Psychopy.