Thank you for this detailed information.

I really love the 5-minute themes and hope that there will be more of them!

First of all, you need to figure out whether the background is the same for each slide, and whether it's really "slide background" or a separate layer (the first layer on the slide, covering the whole slide surface).
Let's look at some examples.

In the new "Happy New Year!" theme there are three kinds of slide backgrounds: red, green, and yellow. These are separate slide layers, i.e. they were not set in the Project Settings, they were added in the slide editor. In this case, there is no way to change the slide background in batch.

In the "Seaside Vacation" theme there is the same background for all slides - it's a texture with blue sea waves, and the texture scale slider is in the far left position. You can see all of that when you open the slide editor and check the settings under Background.
In "Happy Birthday Slideshow", the background is the same image on each slide, and the slide editor prompts that this image is stored in C:\Program Files (x86)\SmartSHOW 3D\Templates\Shows\Celebrations\Happy Birthday Slideshow

For such themes, it is possible to change the background of all slides in batch. Here are the steps.

1. Open Project Settings and first change the background setting to the current one.

e.g., for "Seaside Vacation", select Texture > blue sea waves > scale slider left in the Project Settings, and click Save;

for "Happy Birthday Slideshow", choose Image in Project Settings > Slide background and browse to the image inside Program Files (see path above).

Seemingly, nothing will change at this stage, but that's a necessary step.

2. Now, go to Project Settings again and change the background - to solid color, gradient, other texture or your own image. Click Save, and the change should be applied to all slides.

Remember that some slideshow themes have title slides that are different from the rest of the slides, such as "Funny Kids Photos" or "Anniversary Gift for Girlfriend". Naturally, you'll need to look at the background setting for the majority of slides in such projects.

Hope this helps as a temporary solution, with some projects at least. On our side, we'll ask the designers to take this into account when they create new 5-minute themes.

I just tested the trial of V 6 and saw that the old problem is still there:

When I start a „Slideshow in 5 minutes“ and would like to use one of my own pictures as background for the whole slideshow, I go to „Project Settings“ and choose my picture as slideshow background. After saving I find out that only one slide has this background picture, the rest of the slideshow, however, does not show my new background picture.

I had hoped that this problem was solved in the meantime.

Thank you for help.

Thea

Here are the highlights:

• Convenient timeline for managing slides, transitions, and audio

• Two separate audio tracks for music files and for voice comments

• Artistic photo filters: sepia, grayscale, vignette, mosaic, and more

• Built-in crop tool allowing to crop photos right on the slide

• Multiple Undo and Redo buttons in the slide editor

• Striking animation effects based on color play

• New themes under "Slideshow in 5 minutes"

• Light and dark interface styles

Take a video tour to see what's new:

The free trial of SmartSHOW 3D 6.0 is available here.

If you are a registered user, go to Help > Check for Updates to download the new version.