Altera Monitor Program hangs

[Altera_Forum]

Hi I'm trying to use the altera monitor program to debug. 

But it hangs while I'm loading source code. Here's what It says in the Info and Errors message box:  Compiling source files... nios2-elf-as --gstabs -I E:/altera/81/nios2eds/components/altera_nios2/sdk/inc E:/Altera/msl/msl_sdk/lab5_rand.s -o E:/Altera/msl/msl_sdk/lab5_rand.s.o  nios2-elf-as --gstabs -I E:/altera/81/nios2eds/components/altera_nios2/sdk/inc E:/Altera/msl/msl_sdk/lab6_b.s -o E:/Altera/msl/msl_sdk/lab6_b.s.o  Linking... nios2-elf-ld --defsym nasys_program_mem=0x801000 --defsym nasys_data_mem=0x801000 --section-start .exceptions=0x1000020 --section-start .reset=0x1000000 -e main -u main --script E:/altera/81/nios2eds/bin/monitor/build/nios_as_build.ld -g -o E:/Altera/msl/msl_sdk/lab5_rand.elf E:/Altera/msl/msl_sdk/lab5_rand.s.o E:/Altera/msl/msl_sdk/lab6_b.s.o  ELF generated at E:\Altera\msl\msl_sdk\lab5_rand.elf. nios2-elf-objcopy -O srec E:/Altera/msl/msl_sdk/lab5_rand.elf E:/Altera/msl/msl_sdk/lab5_rand.srec  SREC generated at E:\Altera\msl\msl_sdk\lab5_rand.srec. Using cable "USB-Blaster [USB-0]", device 1, instance 0x00 Resetting and pausing target processor: OK Initializing CPU cache (if present) OK  Downloading 00801000 ( 0%) Downloading 01000020 (48%) Downloaded 1KB in 0.0s   Verifying 00801000 ( 0%) Verifying 01000020 (48%) Verified OK  Connection established to GDB server at localhost:2399 Symbols loaded. Source code loaded. INFO: Program Trace not enabled, because trace requires the Nios II processor to be configured with JTAG Debug Level 3.    I don't see any assembly and most of the menu options are disabled. It used to work before, but now it just hangs. Can someone tell me how to solve this? Thanks.