[Plugin: NextGEN Gallery] Singlepic code causes post to not be displayed

I want to use nextgen singlepic call to insert pictures into my post and sometimes add text to talk about them. For bigger posts, I may desire to have 200+ calls spread throughout the post. When I insert multiple singlepic calls

[singlepic id=292 w=640 float=center]
(with id changing for each one)

into a post and update, the post still exists on my page although nothing is there from the content field during post creation/update. No text, nothing. I have created a test post with 63 singlepic lines and the problem exists. It is here;

https://build1.net/wp_files/?p=170

The only code in the post is
[singlepic id=242 w=640 float=center]
…
[singlepic id=308 w=640 float=center]

Debugging attempts;
I am not sure if float=center exists, although it worked when I was dealing with a few pictures. I have tried this call

[singlepic id=247 w=640]
https://build1.net/wp_files/?p=183

And the 63 pictures alone work, but when I try the entire album as singlepics, it breaks again.

It seems like sometimes it doesn”t work, I remove then add again and maybe it works. Although I don”t like this school of though because it promotes the possibility of mythical coding gremlins.

Any help appreciated! Thanks und Danke!

https://www.ads-software.com/extend/plugins/nextgen-gallery/