I keep getting this a lot, and the only way to solve it is to move my project files to some very specific folder:
But no good. Tried running Quartus Prime as administrator, tried resetting the PC, deleting the db folder, but nothing works. Updated Quartus to the latest version but also no good.
What should I do? I'm running Windows 10.
Right now in any location it doesn't work except E:\F3, which is a temporary location I used to just try to open it a while ago. But it only works if I only replace the .VHD and .QSF files, keeping everything else intact.
I tried in C:\, tried resetting the PC, updating Quartus to the latest version... but nothing solves it.
Originally yes, but I moved it to several other locations that doesn't, and it still happens. For example:
Here's one of the paths I tried (C:\FPGA-LCD) and all the files on the project. When I try to open this project, it will create the "db" folder, place nothing inside, and then show that error message.
If I try that on drive & folder D:\TEST, same thing happens.
May I know what Quartus version you are using?
Can you try to reinstall Quartus and see if it is still persist?
Otherwise this could be due to permission issue on your local machine which you need to allow all to read and write to/from
I was originally using 20.1. Then, because of this, I tried installing 21.1, and nothing changed.
Also, I tried several times to run Quartus in administrator mode, and nothing changed. I'm also logged as the admin of this machine.
Several other engineering programs work on that same folder of that project. For example:
So I don't see how permission issues would affect just Quartus Prime. Note that I also tried moving the FPGA folder all around, even to the desktop, but nothing helps. Quartus just didn't like my PC.
But, as seeing its not a common issue with Quartus Prime, I guess its just some other program I have or something here that's causing this conflict.
I installed Quartus Prime Lite 20.1 on my laptop computer, and the same thing happens! It can't open my project! If I create a new project, once done when I click twice on the entry file it says "Can't open entry file."
OK, if you haven't already, try downloading the installer from the Download Center again. If this is happening on multiple computers, the only thing I can think of is that you may be using the same installer and it's messing up permissions somehow.
I think the issue was with my previous project files. I created a new project and copied/pasted the VHDL and QSF files, and it works. Closed Quartus, reopened, still works. But lets see for how long. I'll report here to keep on records.