Adobe Premiere 23 Freezes when I click Export

How large are your photos, measured in pixels? Although Premiere Elements is better at downsizing photos, particularly on more powerful machines, it can use a lot of resources downsizing large numbers of very large photos.

Remember, your slideshow is likely only 1920x1080 pixels in size. If you're loading 12 megapixel photos onto your timeline, then the program is downsizing 4000x3000 pixel images into images that are 1/6 that resolution. Mulitiply that times 50-60 pictures and you've got the potential for problems.

As I've said, this is less of a problem on today's more powerful computers, particularly if you've got a hard drive with hundreds of gigabytes of free space. But it could be part of the problem. Particularly if  your hard drive space is getting tight. And sizing your photos to more like 2500x1875, for instance, can really streamline the process and avoid these choke points.

Just a thought.

Try updating Windows.

if the cache you cleared previously is not the media cache, follow @Nancy OShea's suggestion first.

if that's not helpful, reset your preferences, http://www.mediacollege.com/adobe/premiere/pro/troubleshooter/trash-preferences.html

[Moderator moved from Using the Community forums to Premiere Elements.]

Try clearing your Cache.  Edit > Preferences > Media > Media Cache Management.

Hope that helps.