Crashing when attempting to search

I'm able to load the app and login - attempt to search however and the app crashes with the following report:

Process: SoulseekQt [1444]
Path: /Applications/SoulseekQt.app/Contents/MacOS/SoulseekQt
Identifier: com.yourcompany.SoulseekQt
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: launchd [66]

Interval Since Last Report: 4399 sec
Crashes Since Last Report: 8
Per-App Interval Since Last Report: 2287 sec
Per-App Crashes Since Last Report: 8

Date/Time: 2012-03-20 08:42:15.431 +0000
OS Version: Mac OS X 10.5.8 (9L31a)
Report Version: 6
Anonymous UUID: 5DDA6B08-2702-4875-885E-E45D7773A041

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread: 0

Dyld Error Message:
Symbol not found: __ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_i
Referenced from: /Applications/SoulseekQt.app/Contents/MacOS/SoulseekQt
Expected in: /usr/lib/libstdc++.6.dylib

Which version of OSX are you using?

I'm having the exact same problem as the OP. I'm using Leopard, and here's the report I got:

Process: SoulseekQt [4378]
Path: /Applications/SoulseekQt.app/Contents/MacOS/SoulseekQt
Identifier: com.yourcompany.SoulseekQt
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: launchd [67]

Interval Since Last Report: 475 sec
Crashes Since Last Report: 1
Per-App Interval Since Last Report: 59 sec
Per-App Crashes Since Last Report: 1

Date/Time: 2012-04-30 16:12:32.098 -0700
OS Version: Mac OS X 10.5.8 (9L31a)
Report Version: 6
Anonymous UUID: 05BBB59E-A172-42D4-A17A-21479F22C0CE

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread: 0

Dyld Error Message:
Symbol not found: __ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_i
Referenced from: /Applications/SoulseekQt.app/Contents/MacOS/SoulseekQt
Expected in: /usr/lib/libstdc++.6.dylib

As stated on the download page, SoulseekQt for Mac requires Snow Leopard or later.

I'm a windows user having the same problem with the 5.10 version

Can you be more specific?

Ok you're right, I guess I missed that. Thanks for your help.