Error when installing ICQ for Mac

today attempted install official icq messenger mac (which downloaded here: http://download.icq.com/download/mac/en ) installation of .air file failed , asked me contact software creator new installation file.

 

recommended system requirements:

• mac os x v10.4.9 or later (ok)
• flash 10 , above (ok)
• adobe air 2.5 (ok)

 

the system.log shows following error:

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mar 13 12:16:35 daniels-macbook-air.local adobe air application installer[1192]: application installer begin version 3.6.0.6090 on mac os 10.8.2 x86

mar 13 12:16:35 daniels-macbook-air.local adobe air application installer[1192]: commandline is: /users/daniel/downloads/icq4mac.air

mar 13 12:16:35 daniels-macbook-air.local adobe air application installer[1192]: installed runtime (3.6.0.6090) located @ /library/frameworks/adobe air.framework

mar 13 12:16:35 daniels-macbook-air.local adobe air application installer[1192]: unpackaging file:///users/daniel/downloads/icq4mac.air /var/folders/ck/5qfd1kc92ks3zk03zcgp3q9w0000gn/t/flashtmp.mwwfwx

mar 13 12:16:36 daniels-macbook-air.local adobe air application installer[1192]: package signature validation failed

mar 13 12:16:36 daniels-macbook-air.local adobe air application installer[1192]: got unexpected fatal error while unpackaging: [errorevent type="error" bubbles=false cancelable=false eventphase=2 text="invalid package signature" errorid=5022]

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so it's quite obvious package signature failed. however, able install messenger on machine successfully, i'm wondering why fails macbook.

do have previous version of icq installed on system?  if so, try moving trash installing again.  when installed on other machine, same binary downloaded on macbook?  chance macbook's file corrupted?

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