Checksum Errors after loading IOS

[Circusnuts]

I have successfully upgraded 3X Cisco 3000's to run Enterprise IOS's.  I'm not real up on the error I'm getting "after" the IOS is copied into FLASH...    Verifying checksum...  invalid (expected 0xB482, computed 0x8024)   Any ideas...  11.3 & 12.0 both showed this error, but 11.2 did not.    Here is the show version...   BOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c)XB1, PLATFORM SPECIFIC RELEASE SOFTWARE (fc1)   System image file is "flash:11Enterprise.MZ", booted via flash   cisco 3000 (68030) processor (revision 0xA0) with 16384K/512K bytes of memory. Processor board ID 5007660, with hardware revision 00000000 Bridging software. X.25 software, Version 2.0, NET2, BFE and GOSIP compliant. 1 Ethernet/IEEE 802.3 interface(s) 1 Serial network interface(s) 32K bytes of non-volatile configuration memory. 8192K bytes of processor board System flash (Read/Write)   Configuration register is 0x2102   Thanks !!! Phil