This is a very interesting issue I seem to be having with a certain texture pack on the Switch version of Minecraft. I have checked the texture on the Xbox version and the Switch versions of Minecraft and it only affected the Switch.
What it is: The Chroma Hills HD Texture Pack by Syclone Studios
What it causes: When I activate this texture pack on a world (old or new), I immediately get a notification that there was a communication error. When the world is loaded, it loads the texture pack's loading screen. It will pause loading immediately, continue to play music, only for the entire program needing to close on my Switch due to an error. I have tested another texture pack (i.e. Beyond the Lands or the Natural Texture) on the world but it seems that certain save file has been permanently lost. When I first load a world with a non-problem causing texture pack, and then replace the texture with Chroma Hills, the problem presents itself. No textures seem to glitch or corrupt data within the world, the only issue is Chroma Hills crashes my entire game, then renders the world inaccessible.
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Update!
I found a solution. Turns out Chroma Hills HD normally runs at 128x, of which the switch does not have the ability to generate new or run old worlds in. Luckily they did patch the texture pack so it could run at 64x, simply just load in the texture pack, then scroll over it to see the same drop-down menu. A "configure" button (marked with a little gear), and a options menu will appear. The only option present is the resolution, select it at move it to 64x instead of 128x. The world should load and play just fine.
Cleaning up old tickets: This ticket has not been updated recently (~1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.
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Recently I’ve been kinda having the same issue. Whenever I load the Classic Texture Pack on global resources my entire game crashes saying “The software was closed because an error occurred”. Either it crashes when loading the texture or crashes when joining a realm or server. Btw I also use Switch.
Reopening to resolve as a duplicate of MCPE-40666.
Moved ticket to the correct project. Please post future issues regarding the Bedrock version for Nintendo Switch on the Minecraft (bedrock codebase) project.