Toggle Closed Captioning

I simply threw out Adobe's CC, and created my own.  I placed a black bar at the bottom of the content slide master.  Then, on the first content slide, I set a bar (<smart shape xxx>) of the same size that is on top and visible for rest of project.  Then I created a variable, and a CC button.  The advanced actions use a conditional to test state of variable and toggle it if clicked.
IF <variable> is equal to 1,

Hide <smart shape xxx>, toggle <variable>, Continue

ELSE
Show <smart shape xxx>, toggle <variable>, Continue

CC are text boxes that are always visible (i.e., timed to audio, but not state changed) -- but hidden if the bar is visible.  Thus, CC "ON" = bar not visible, CC "OFF" = bar visible.  
NOTE:  In some cases (e.g., KC slides), you may wish to have a larger "cover bar".  Simply add that smart shape to the Show and Hide commands by adding an action to both "Actions" and "Else".

I am new to posting here, but I had this same problem with my customized closed caption button. It was set to toggle the cpCmndCC whenever it was clicked. It would reset to zero on every slide requiring you to click the button again to turn the CCs back on. I tried the Skin Editor work-around that was posted by someone else on this forum, and that didn't work for me. If you have the time to do it, you can do what I did and create completely customized closed captions using Smartshapes. The benefit to this is that you can make those Smartshapes look however you want, and they can be placed wherever you would like them on the screen, and there is no pesky "X" button up in the corner of them. It is labor intensive, and you need to know how to use the Advanced Actions, and create variables in Captivate, but this method makes sure the captions work correctly every time. Here was my process in case you are interested:

I created a Smartshape that would contain the slide's closed caption. In some cases more than one shape would be used on a slide depending on how much audio there would be, and they would be timed to show up in synch with the audio that would be "reading" the caption. This way the captions would not overlap one another when you tell them to show up.

I would then create two buttons, one would be used to show the caption(s), the other would be used to hide them. The "show" button is placed directly over the top of the "hide" button on the slide, and I made the “show” button a simple “CC” button, while the “hide” button was the same size and shape as the “show” button and even had the CC on it, but had a red slash through it, denoting that when you click that button, the captions will hide. You need to make note of the name of the "show" button and the name(s) of the Smartshape(s), as these will be used to create the actions for the "show" and "hide" buttons.

I then went into "Project" and clicked the "Variables" button and created a new variable called "Caption1" that was set to have a default value of "0". Then, I went to the Advanced Actions tab and created actions for each of the "show" buttons and "hide" buttons. For slide 1, I called the "show" action CC1 (slide 2 was CC2, and so forth), and the "hide" action I called CC1Off (CC2Off for slide 2 and so on). CC1 would simply hide the "show" button, show the Smartshape(s) used for the captions, and either Assign Caption1 with 1, or Increment Caption1 by 1, either way works. CC1Off would show the "show" button, hide the Smartshape(s) used for the captions, and either Assign Caption1 with 0 or Decrement Caption1 by 1.

I then created actions for each slide that I called "Forward1", "Forward2" etc. that would I set to run on enter of each slide. This action will check the state of my "Caption1" variable. So, I set it to check If Caption1 was equal to 1, then my "show" button on that particular slide would be hidden, and the Smartshape(s) with the caption(s) for that slide would be shown because I am saying that when Caption1 =1, then caption(s) will be shown. Else, my "show" button on that slide will be shown, and the Smartshape(s) used for the caption(s) will be hidden. In this way, when the student uses the "back" button, or when they go to the next slide, the state of the Caption1 variable will be checked and your "show" button will either be hidden or shown, as well as your captions.

Don't forget to go back to your slide and set the actions for the "show" and "hide" buttons to Execute Advanced Actions, and pick your "show" action (mine was CC1 for slide 1) for the show button and your "hide" action (mine was CC1Off) for the "hide" button. Also, you will need to set each slide to execute its corresponding "Forward" action "On slide enter".

As I said, if you have a ton of slides, this could be very labor intensive and you will probably need a spreadsheet to keep all of the names for your buttons and captions on each slide straight, but I really think that once you get it set up for one project, it could be used as a template for other projects. There may be easier ways to get the same effect, and if anyone has shortcuts figured out, I would love to hear about them.

My job recently updated to Adobe Captivate 2017 and we also have a very customized project with this functionality for closed captioning. I looked at the Adobe Captivate (2017 release) known issues and couldn't find this issue until this post.

We have until April 2018 to get this project updated, but I was wondering when an update will go out to fix this bug? I know we also got another customized project coming next year. So, sooner the better if possible.

Excellent resolution until the patch goes out.

i'm still looking for a fix as well. any way Adobe could share out this hot fix they shared with folks a few months ago with the rest of us?

Your action has two superfluous commands, use either Toggle or either Assign. Have a look at:

1 action = 5 Toggle Buttons - Captivate blog

However that will not solve your problem. There is a small bug in CP2017: such a custom button to toggle CC will reset itself on the next slide if the default playbar is not turned on. I am sure that a fix will be created soon by the team.