iOS Self signing failed, can't debug on jailbroken phone

[razor7]

Hi, after following this guide http://iphonedevwiki.net/index.php/Xcode to "self signing" my apps and be able to debug, I got this error.

CodeSign /Users/martin/Library/Developer/Xcode/DerivedData/Whereami-cxivusplchgtwdbzvanaxhdxckgq/Build/Products/Debug-iphoneos/Whereami.app
cd /Users/martin/Desktop/Whereami
setenv CODESIGN_ALLOCATE /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/codesign_allocate
setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/usr/local/bin/ldid3.py --force --sign ce7a9eb2bac7e285e82826a6fb69fd3164c11bfb --resource-rules=/Users/martin/Library/Developer/Xcode/DerivedData/Whereami-cxivusplchgtwdbzvanaxhdxckgq/Build/Products/Debug-iphoneos/Whereami.app/ResourceRules.plist -gta --entitlements /Users/martin/Library/Developer/Xcode/DerivedData/Whereami-cxivusplchgtwdbzvanaxhdxckgq/Build/Intermediates/Whereami.build/Debug-iphoneos/Whereami.build/Whereami.xcent /Users/martin/Library/Developer/Xcode/DerivedData/Whereami-cxivusplchgtwdbzvanaxhdxckgq/Build/Products/Debug-iphoneos/Whereami.app

minimal/mapping.h(54): _assert(false); errno=2
terminate called throwing an exceptionTraceback (most recent call last):
File "/usr/local/bin/ldid3.py", line 24, in <module>
check_call(['/usr/local/bin/ldid', '-S' + f.name, obj_path])
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 504, in check_call
subprocess.CalledProcessError: Command '['/usr/local/bin/ldid', '-S/var/folders/6t/hfwbv_l15t13jn6_gz43ysr80000gn/T/tmpvWMyYb', '/Users/martin/Library/Developer/Xcode/DerivedData/Whereami-cxivusplchgtwdbzvanaxhdxckgq/Build/Products/Debug-iphoneos/Whereami.app/Whereami']' returned non-zero exit status -6
Command /usr/local/bin/ldid3.py failed with exit code 1

After that, I executed ldid this wayi:

/usr/local/bin/ldid -S/var/folders/6t/hfwbv_l15t13jn6_gz43ysr80000gn/T/tmpufmZ2Y /Users/martin/Library/Developer/Xcode/DerivedData/Whereami-cxivusplchgtwdbzvanaxhdxckgq/Build/Products/Debug-iphoneos/Whereami.app/Whereami

and got this:

minimal/mapping.h(54): _assert(false); errno=2
terminate called throwing an exceptionAbort trap: 6

Can anyone help me with this?

Thanks a lot!