Opening Signal Tap 2 Causes Fatal Error - Opening Signal Tap 2 Causes Fatal Error Why does this happen to me? I was using signal tap and suddenly this happened and now it happens every time I try to open signal tap and Quartus crashes. This is the error log: Problem Details Error: *** Fatal Error: Access Violation at 0X00007FFBBE7F72D0 Module: quartus.exe Stack Trace: 0x172cf: SDR_DATA_INSTANCE::get_dom_node + 0xf (sld_sdr) 0x74b2e: SEDQ_JTAG_WIDGET::get_jtag_hardware + 0x1e (sld_sedq) 0x5d03: SLDQ_JTAG_WIDGET::on_update_hardware_combo_timer + 0x53 (sld_sldq) 0x11d700: QMetaObject::activate + 0x520 (QtCore4) 0x120c59: QObject::event + 0x69 (QtCore4) 0x22c55: QApplicationPrivate::notify_helper + 0xf5 (QtGui4) 0x228ef: QApplication::notify + 0x17bf (QtGui4) 0x10ec4b: QCoreApplication::notifyInternal + 0x7b (QtCore4) 0x134cdd: QEventDispatcherWin32::registeredTimers + 0x59d (QtCore4) 0x1340ff: QEventDispatcherWin32::processEvents + 0xb5f (QtCore4) 0x17445: DispatchMessageW + 0x6a5 (USER32) 0x16f61: DispatchMessageW + 0x1c1 (USER32) 0x133982: QEventDispatcherWin32::processEvents + 0x3e2 (QtCore4) 0x82004: QApplicationPrivate::openPopup + 0x204 (QtGui4) 0x10bb7b: QEventLoop::exec + 0x22b (QtCore4) 0x428520: QDialog::exec + 0xf0 (QtGui4) 0x9edc7: AFCQ_MSG_DISPLAY::internal_error_display + 0x277 (GCL_AFCQ) 0x1dc81: MSG_REPORT::internal_error + 0xf1 (CCL_MSG) 0x38817: MSG_ERROR_INFO::finalize + 0x97 (CCL_MSG) 0x39234: MSG_INTERNAL_ERROR::report + 0xd4 (CCL_MSG) 0x10389: SDR_DATA_SESSION::parse + 0x1a99 (sld_sdr) 0x9871: SDR_DATA_SESSION::SDR_DATA_SESSION + 0x241 (sld_sdr) 0x8071: SDR_DATA_MANAGER::open_session + 0x61 (sld_sdr) 0x5ed12: SDR_TX_SESSION::open_session + 0x32 (sld_sdr) 0xcbd14: SEDQ_TX_MANAGER::open_document + 0x104 (sld_sedq) 0xcc60b: SEDQ_FRAME_WND::open_file + 0x9b (sld_sedq) 0x1f23e: QUI_FRAME_MGR::open_file + 0x53e (SYS_QUI) 0x625f6: QUI_TOOLS_MENU::sedq_action + 0x1b6 (SYS_QUI) 0x11d700: QMetaObject::activate + 0x520 (QtCore4) 0xa09f: QAction::activate + 0xdf (QtGui4) 0x3ba703: QMenu::actionGeometry + 0x443 (QtGui4) 0x3ba595: QMenu::actionGeometry + 0x2d5 (QtGui4) 0x61b84: QWidget::event + 0xd4 (QtGui4) 0x3bb444: QMenu::event + 0x284 (QtGui4) 0x22c55: QApplicationPrivate::notify_helper + 0xf5 (QtGui4) 0x2184e: QApplication::notify + 0x71e (QtGui4) 0x10ec4b: QCoreApplication::notifyInternal + 0x7b (QtCore4) 0x25a9e: QApplicationPrivate::sendMouseEvent + 0x1de (QtGui4) 0x865b6: QScrollBar::trUtf8 + 0x10b6 (QtGui4) 0x8a301: QApplication::winMouseButtonUp + 0x2761 (QtGui4) 0x17445: DispatchMessageW + 0x6a5 (USER32) 0x16f61: DispatchMessageW + 0x1c1 (USER32) 0x133982: QEventDispatcherWin32::processEvents + 0x3e2 (QtCore4) 0x82004: QApplicationPrivate::openPopup + 0x204 (QtGui4) 0x10bb7b: QEventLoop::exec + 0x22b (QtCore4) 0x10e18f: QCoreApplication::exec + 0xdf (QtCore4) 0x198b: qgq_main + 0x8b (quartus) 0x133a8: msg_main_thread + 0x18 (CCL_MSG) 0x14bae: msg_thread_wrapper + 0x6e (CCL_MSG) 0x16af0: mem_thread_wrapper + 0x70 (ccl_mem) 0x12c41: msg_exe_main + 0xa1 (CCL_MSG) 0x2777: WinMain + 0x127 (quartus) 0x1f40: __tmainCRTStartup + 0x148 (quartus) 0x17973: BaseThreadInitThunk + 0x13 (KERNEL32) 0x6a270: RtlUserThreadStart + 0x20 (ntdll) End-trace Executable: quartus Comment: None System Information Platform: windows64 OS name: Windows 10 OS version: 10.0 Quartus Prime Information Address bits: 64 Version: 19.1.0 Build: 670 Edition: Lite Edition Also when I try to recompile I get this Problem Details Error: Internal Error: Sub-system: SDR, File: /quartus/sld/sdr/sdr_data_session.cpp, Line: 2105 Unexpected FIO_FILE_SYSTEM::status() return Stack Trace: 0x10389: SDR_DATA_SESSION::parse + 0x1a99 (sld_sdr) 0x9871: SDR_DATA_SESSION::SDR_DATA_SESSION + 0x241 (sld_sdr) 0x8071: SDR_DATA_MANAGER::open_session + 0x61 (sld_sdr) 0x1f896: ICE_CONTROL_GUI::setup_assignment + 0x356 (sld_ice) 0x2a54a: QUI_FRAME_WND::flow_starting_setup + 0xca (SYS_QUI) 0x128f1: QUI_APP::start_flow + 0x51 (SYS_QUI) 0x4e622: QUI_PROCESSING_MENU::start_compile_action + 0x62 (SYS_QUI) 0x11d700: QMetaObject::activate + 0x520 (QtCore4) 0xa09f: QAction::activate + 0xdf (QtGui4) 0x3485b5: QAbstractButton::click + 0x135 (QtGui4) 0x349499: QAbstractButton::mouseReleaseEvent + 0x59 (QtGui4) 0x3f4e7e: QToolButton::mouseReleaseEvent + 0xe (QtGui4) 0x61b84: QWidget::event + 0xd4 (QtGui4) 0x22c55: QApplicationPrivate::notify_helper + 0xf5 (QtGui4) 0x2184e: QApplication::notify + 0x71e (QtGui4) 0x10ec4b: QCoreApplication::notifyInternal + 0x7b (QtCore4) 0x25a9e: QApplicationPrivate::sendMouseEvent + 0x1de (QtGui4) 0x86940: QScrollBar::trUtf8 + 0x1440 (QtGui4) 0x8a301: QApplication::winMouseButtonUp + 0x2761 (QtGui4) 0x17445: DispatchMessageW + 0x6a5 (USER32) 0x16f61: DispatchMessageW + 0x1c1 (USER32) 0x133982: QEventDispatcherWin32::processEvents + 0x3e2 (QtCore4) 0x82004: QApplicationPrivate::openPopup + 0x204 (QtGui4) 0x10bb7b: QEventLoop::exec + 0x22b (QtCore4) 0x10e18f: QCoreApplication::exec + 0xdf (QtCore4) 0x198b: qgq_main + 0x8b (quartus) 0x133a8: msg_main_thread + 0x18 (CCL_MSG) 0x14bae: msg_thread_wrapper + 0x6e (CCL_MSG) 0x16af0: mem_thread_wrapper + 0x70 (ccl_mem) 0x12c41: msg_exe_main + 0xa1 (CCL_MSG) 0x2777: WinMain + 0x127 (quartus) 0x1f40: __tmainCRTStartup + 0x148 (quartus) 0x17973: BaseThreadInitThunk + 0x13 (KERNEL32) 0x6a270: RtlUserThreadStart + 0x20 (ntdll) End-trace Executable: quartus Comment: None System Information Platform: windows64 OS name: Windows 10 OS version: 10.0 Quartus Prime Information Address bits: 64 Version: 19.1.0 Build: 670 Edition: Lite Edition Not sure what to do since this makes Quartus unusable Replies: Re: Opening Signal Tap 2 Causes Fatal Error thank you, this problem was causing me grief with removing and readding platform designer files and attempting to recompile Replies: Re: Opening Signal Tap 2 Causes Fatal Error I deleted all the .stp files in the project and that fixed it Replies: Re: Opening Signal Tap 2 Causes Fatal Error We do not receive any response from you to the previous question that we have provided. Please post a response in the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you with your follow-up questions. Replies: Re: Opening Signal Tap 2 Causes Fatal Error any update? Replies: Re: Opening Signal Tap 2 Causes Fatal Error Besides this, try to reduce some signal to be monitor. Replies: Re: Opening Signal Tap 2 Causes Fatal Error Trash the db and incremental_db folders and try to compile again. Something probably got corrupted in the compilation database.