Quartus 17.1 What does this error message mean?

[Altera_Forum]

Problem Details 

Error: Internal Error: Sub-system: PGME, File: /quartus/pgm/pgme/pgme_algorithm.cpp, Line: 1109 Illegal tap position Stack Trace:  0x4f38e: PGME_ALGORITHM::get_id_index + 0x6e (pgm_pgme)  0x516fb: PGME_MAXII_ALGORITHM::get_open_ids + 0xab (pgm_pgme)  0x5611c: PGME_MAXII_ALGORITHM::init + 0x70c (pgm_pgme)  0x37c62: PGME_PROGRAMMER::engage + 0x1162 (pgm_pgme)  0xd425: MDB_FILE_NEW_DLG::OK_clicked + 0x75 (sys_mdb)  0x295b7: QThread::start + 0x427 (QtCore4)  0x24f7e: _beginthreadex + 0x106 (MSVCR120)  0x25125: _endthreadex + 0x191 (MSVCR120)  0x1652c: BaseThreadInitThunk + 0xc (kernel32)  0x2c520: RtlUserThreadStart + 0x20 (ntdll)   End-trace   Quartus Prime Version 17.1.0 Build 590 10/25/2017 SJ Lite Edition   Executable: quartus Comment: None   System Information Platform: windows64 OS name: Windows 7 OS version: 6.1   Quartus Prime Information Address bits: 64 Version: 17.1.0 Build: 590 Edition: Lite Edition

[Altera_Forum]

This means Quartus has crashed. You may need to raise a mysupport ticket to find out why.

[Altera_Forum]

you can also check your system logfiles. You might find something there. Is it a reoccurring error or just a one-off.

[Altera_Forum]

--- Quote Start ---  you can also check your system logfiles. You might find something there. Is it a reoccurring error or just a one-off.  --- Quote End ---   It error always happens in the versions 16.0, 17.1. After this error, I need to restart my computer because the USBblaster does not work after that.

[Altera_Forum]

Quit Quartus and trash the db and incremental_db folders for your project. You'll need to recompile, but this might fix the issue. 

 You may also need to reinstall USB Blaster drivers.

[Altera_Forum]

--- Quote Start ---  It error always happens in the versions 16.0, 17.1.  --- Quote End ---   You didn't actually tell when it happens, e.g. compiling a specific project, in which phase, etc.    --- Quote Start ---  After this error, I need to restart my computer because the USBblaster does not work after that.  --- Quote End ---   This is usually indicating that part of Quartus is still running. To terminate it without restarting Windows, you can use the task manager.

[Altera_Forum]

If I program separately, everything is programmed correctly and works. 

If all four together, then a complete collapse occurs.