@Axel Vogt 

I have two licenes which I use for my work installation and a traveling installation (both are laptops).  When updating to a newer version of Maple I downloaded the installer with the link provided by Maplesoft (a download per laptop). One installation went well the other did not. I tried it (download and installation) several times with the traveling laptop.

I then copied the installer from the work laptop to an external drive and installed from there and it worked.

With newer versions of Maple I never had this issue again. Must have been 2021 or 2022. That's all what I recall. Both laptops are managed and I have no control over the system configuration and software deployments. So maybe something has changed in the meantime that I am not aware of.

@michele 

- Delete the installation file and download from the official site again the 64bit version.

- If this does not  work and Maple 2023.1 works on your deskop: If you still have the installation file on the deskop that successfully installed and worked, transfer it to the laptop and try to install this one.

I once (with an older version of Maple) could not successfully install Maple on a laptop and did the above (file transfer). Strangely, this worked in my case.

Can you provide a pde to the difference equation?

@michele 

If I understand correctly Maple 2021 worked. Did 2023.1 ever work or never on your new Laptop?

Anything particular about the installation folder, installation behind a proxi or admin rights?

When you start Maple 2023.1: What is written in the lower left corner of the Maple Window? You should either see Ready, Evaluationg or Opening worksheet.

How does the mouse cursor look like?

You might have this issue

https://www.mapleprimes.com/questions/236717-Slow-Opening-Of-Start-Page#answer295917

If so, you should turn off the start page as described in the link.

If not I would consider reinstallation of Maple.

For open: Have you tried all of

• crtl-o
• File>Open
• 

Can you open recent documents from the file menu File>Recent documents?

Is File>New followed by and File>Save As also not working?

Great answers form dharr and Rouben Rostamian. If I may add:

The problem with your parameters was that the width of the range (i.e 10) divided by the mesh size (i.e. 5000) did not match the distance from the left boundary to the singularity. Moving the left boundaray a bit further away works:

Download ex_reply.mw

@Mads980h

on my machine it takes some time until the folder content of the backup folder is displayed

@acer 

Thank you for this detailed answer. Very much appreciated!

If I may add a follow-up questions:

Why is

FunctionAdvisor(identities, JacobiSN(z, k))[5] = convert(FunctionAdvisor(identities, JacobiSN)[5], `global`);
is(%);

true whereas this one

FunctionAdvisor(identities, InverseJacobiSN(z, k))[3] = convert(FunctionAdvisor(identities, InverseJacobiSN)[3], `global`);
is(%);

returns false.

@rcorless 

Thank you for considering this summary worth publishing. This is unexpected. I was not sure about clarity and exactness – and I had no one to proofread it. I'm considering removing the student package calls, as I was informed that the package isn't designed for such cases. Perhaps I'll receive further feedback.

I entered the VA with

@rlopez

This much better than digging through Mapleprimes post.

 Thank you for clarifying.

@kjell 

I am surprised that there nothing usefull in Mapleprimes.

Can you be more specific about the problem you want to solve? The PDE and BC would make an answer easier. Uploading a Maplefile is helpful as well.

Does this help?
https://www.mapleprimes.com/questions/226971-Laplace-Equation-Pdsolve

There is probably more to find in Mapleprimes

@kjell 

On my Windows 10 machine I observe per each nuge of the mouse weel a line feed as indicated here by the red ticks

(The system setting for themouse  weel is set to 3 lines).

What is the operating system of your machine?