MDEWAKANTON  Here too (10.4.11 on PPC). Uninstalled all InputManagers just in case, but didn't solve.  
(Version 4.5)

PMASON  Ditto here on a PowerPC running Mac OS X 10.4.11. Deleted prefs, but no window will open.  
(Version 4.5)

HALEAKALARI  same here. no window at all under any circumstances. except i'm on an intel macbook pro, running os x 10.4.11. any chance we could get a link to the last version?

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edit: i found the link, it is here:

http://www.devon-technologies.com/files/EasyFind_4.0.1.dmg.zip

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(Version 4.5)

MUSI  Same problem here, on 10.4.11. App launches but no window.  
(Version 4.5)

LITLJOHN  A patched Easyfind 4.5 that works with Tiger OS X has been released today by devon-technologies.com - a window now opens in the program.  
(Version 4.5)

MUSI  Could you tell us where is the patch? I searched the site, and all I could find was 4.5 as of July 8th, which had no window.  
(Version 4.5)

LITLJOHN  Musi, the Easyfind link can be found here;

http://www.devon-technologies.com/download/  
(Version 4.5)

MDEWAKANTON  Big thanks to DEVONtechnologies and Litljohn :-)  
(Version 4.5)

MACUPDATE ADMIN  I've downloaded this file three times today, the third time was just a few moments ago. Each time the .dmg mounted with no issues using Safari Version 3.2 (4525.26.12), OS X 10.4.11 on a MBP C2D.   
(Version 6.0b1)

LITLJOHN  Interesting... I'd just finished posting my problem with the .dmg and noticed a reply to the previous poster from MacUpdate Admin regarding their success with their .dmg mountings... They said they're using Safari 3.2 and it got me thinking. I had just updated to Safari 3.2 myself but decided to revert back to 3.1.2 the other day. (Pithelmet not working yet with 3.2) SO, turns out that the file I receive using that Safari 3.1.2 is called pm6.dmg.bz2 - it won't mount - tried it at least 6 times. ANYWAY, I have another (clean) machine available using Safari 3.1.2 & OS X 10.4.11 where I've NOT installed Safari 3.2 and guess what - I downloaded the file once again and it's called pm6.dmg and it mounted just fine on that machine! I wonder what THAT's all about?! ;)  
(Version 6.0b1)

MACUPDATE ADMIN  http://unsanity.org/archives/mac_os_x/my_dmg_is_bwoken_after_download.php

If you download what should be a .dmg and it shows up on the desktop as a .dmg.bz2, you must remove the .bz2 suffix and then the downloaded .dmg will mount.  
(Version 6.0b1)

LITLJOHN  Wow, you're right! The teeth gritting part for me was that the .bz2 would create the .dmg that wouldn't mount! lol Knock off the .bz2 and it mounts perfectly... AND it has nothing at all to do with my switch back to Safari 3.1.2 from 3.2... ONE can never presume can one? thanks once again :)  
(Version 6.0b1)