BSPlayer v.0.85.488 Unhandled exception at EIP:1000F170...

[ale76]

While trying to open an. avi file I get this error message:
"BSPlayer v0.85.488, Unhandled exception at EIP: 1000F170
Application will be terminated.
Please report this info to the author with description what were you doing.
Access violation at address 1000F170 in module 'BSRENDV.DLL'. Read of address FFFFFFFF
EAccessViolation
, 0x004B289F, 0x004B2B01, 0x004520AF, 0x0044971A, 0xBFF7363B, 0xBFF94407, 0x00738CD6
Bytes at EIP: 8B 08 FF 51 10 85 C0 0F 8C 93 00 00 00 8B 54 24 04 8B"

My BSPlayer is running on an Intel Pentium II 233MHz with Windows 98.
I want to make clear that the player sometimes WORKS (and it does fine!), but when it doesn't work that's when it displays the message above.
I've seen many other users troubled about the same problem. So, what's going on???