I see the exact same behavior on my machine running Windows 7 64-bit and with an AMD Phenom II X6 processor (that does support SSE2 instructions). I see the crash on both LAME 3.99.4 and 3.99.5.
Please post the parameters that cause the crash. That would be swell.
3.99.5 fixed this problem for me. (on Athlon XP 3200+ / 32-bit Win 7)
I just retested 3.99.3, 3.99.4 and 3.99.5. Here are the foobar2000 console logs:
3.99.3
CLI encoder: C:\Soft\Lame\3993\lame.exe
Destination file: F:\Rip\Jam & Spoon\1997 - Kaleidoscope\02 - Kaleidoscope Skies.mp3
Encoder stream format: 44100Hz / 2ch / 16bps
Command line: "C:\Soft\Lame\3993\lame.exe" -S --noreplaygain -V 1 - "02 - Kaleidoscope Skies.mp3"
Working folder: F:\Rip\Jam & Spoon\1997 - Kaleidoscope\
Encoder process still running, waiting...
Encoder process terminated cleanly.
Track converted successfully.
Total encoding time: 0:16.125, 12.85x realtime
3.99.4
CLI encoder: C:\Soft\Lame\3994\lame.exe
Destination file: F:\Rip\Jam & Spoon\1997 - Kaleidoscope\02 - Kaleidoscope Skies.mp3
Encoder stream format: 44100Hz / 2ch / 16bps
Command line: "C:\Soft\Lame\3994\lame.exe" -S --noreplaygain -V 1 - "02 - Kaleidoscope Skies.mp3"
Working folder: F:\Rip\Jam & Spoon\1997 - Kaleidoscope\
An error occurred while writing to file (The encoder has terminated prematurely with code -1073741795 (0xC000001D); please re-check parameters) : "F:\Rip\Jam & Spoon\1997 - Kaleidoscope\02 - Kaleidoscope Skies.mp3"
Additional information:
Encoder stream format: 44100Hz / 2ch / 16bps
Command line: "C:\Soft\Lame\3994\lame.exe" -S --noreplaygain -V 1 - "02 - Kaleidoscope Skies.mp3"
Working folder: F:\Rip\Jam & Spoon\1997 - Kaleidoscope\
Conversion failed: The encoder has terminated prematurely with code -1073741795 (0xC000001D); please re-check parameters
could not enumerate tracks (Object not found) on:
F:\Rip\Jam & Spoon\1997 - Kaleidoscope\02 - Kaleidoscope Skies.mp3
Total encoding time: 0:08.657, 0.04x realtime
3.99.5
CLI encoder: C:\Soft\Lame\3995\lame.exe
Destination file: F:\Rip\Jam & Spoon\1997 - Kaleidoscope\02 - Kaleidoscope Skies.mp3
Encoder stream format: 44100Hz / 2ch / 16bps
Command line: "C:\Soft\Lame\3995\lame.exe" -S --noreplaygain -V 1 - "02 - Kaleidoscope Skies.mp3"
Working folder: F:\Rip\Jam & Spoon\1997 - Kaleidoscope\
Encoder process still running, waiting...
Encoder process terminated cleanly.
Track converted successfully.
Total encoding time: 0:16.484, 12.57x realtime