Has anyone else had a problem with Core Duo machines? Anyone else try installing 6.0a4 onto a Core Duo mini? 

This is what I sent netwin support, but thought I'd  throw it out there to see if it might not be something obvious:

Problem trying to update surgemail 5.3h2 to 6.0a4 running on OS X v10.6.8 with the following hardware:

Hardware Overview:

      Model Name: Mac mini
      Model Identifier: Macmini1,1
      Processor Name: Intel Core Duo
      Processor Speed: 1.66 GHz
      Number Of Processors: 1
      Total Number Of Cores: 2
      L2 Cache: 2 MB
      Memory: 2 GB
      Bus Speed: 667 MHz
      Boot ROM Version: MM11.0055.B08
      SMC Version (system): 1.3f4
      Serial Number (system): G86164CCU36
      Hardware UUID: 00000000-0000-1000-8000-0016CBA3DBEF

I get the error:

5$ sudo ./install.sh 
./install.sh: line 2: ./surgemail: Bad CPU type in executable

Update had no problem on mirror machine running the same system with slightly newer hardware:

Hardware Overview:

      Model Name: Mac mini
      Model Identifier: Macmini4,1
      Processor Name: Intel Core 2 Duo
      Processor Speed: 2.4 GHz
      Number Of Processors: 1
      Total Number Of Cores: 2
      L2 Cache: 3 MB
      Memory: 2 GB
      Bus Speed: 1.07 GHz
      Boot ROM Version: MM41.0042.B00
      SMC Version (system): 1.65f2
      Serial Number (system): D2HF903DDD6H
      Hardware UUID: CED108C3-9337-54D2-B303-0EB25D5F8E95

I'm assuming that since PowerPC macs are still supported, there would be no reason to intentionally cut off these older Core Duo machines, no? Is it possible something's wrong with that particular system to report that error on the same installer? 

Thanks for any help. Product key is: XXXXXXX

- Mike