I'm trying to install the VFP 9 SP1 beta and it seems to refuse to install itself on my machine. It fails with,

"The upgrade patch cannot be installed by the Windows Installer service because the program to be upgraded may be missing, or the upgrade patch may update a different version of the program. Verify that the program to be upgraded exists on your computer an
d that you have the correct upgrade patch."

VFP 9 is definitely installed. I looked in the event log and it references an MSI log file (I hate MSI when things don't work...). Here's part of it,

MSI (c) (48:98) [10:20:58:515]: Note: 1: 2205 2: 3: MsiPatchSequence
MSI (c) (48:98) [10:20:58:515]: SequencePatches starts. Product code: {9BAAE963-E16D-4E17-AFE6-1965F5AA0292}, Product version: 9.00.1720, Upgrade code: {B2BD6124-22F7-45D1-AFA6-65F8500EB19D}, Product language 1033
MSI (c) (48:98) [10:20:58:515]: Note: 1: 2262 2: _Columns 3: -2147287038
MSI (c) (48:98) [10:20:58:515]: Note: 1: 2205 2: 3: MsiPatchSequence
MSI (c) (48:98) [10:20:58:515]: Note: 1: 2205 2: 3: MsiPatchMetadata
MSI (c) (48:98) [10:20:58:515]: Note: 1: 2262 2: _Columns 3: -2147287038
MSI (c) (48:98) [10:20:58:515]: Note: 1: 2205 2: 3: MsiPatchSequence
MSI (c) (48:98) [10:20:58:515]: Note: 1: 2205 2: 3: MsiPatchMetadata
MSI (c) (48:98) [10:20:58:515]: 2.0 patch C:\DOCUME~1\PMROZO~1\LOCALS~1\Temp\IXP000.TMP\VFP9.0sp1-KB906478-X86-Beta-Enu.msp of type minor upgrade takes product {9BAAE963-E16D-4E17-AFE6-1965F5AA0292} to version 9.00.3307
MSI (c) (48:98) [10:20:58:515]: PATCH SEQUENCER: verifying the applicability of 2.0 minor upgrade patch C:\DOCUME~1\PMROZO~1\LOCALS~1\Temp\IXP000.TMP\VFP9.0sp1-KB906478-X86-Beta-Enu.msp against product code: {9BAAE963-E16D-4E17-AFE6-1965F5AA0292}, product version: 9.00.1720, product language 1033 and upgrade code: {B2BD6124-22F7-45D1-AFA6-65F8500EB19D}
MSI (c) (48:98) [10:20:58:515]: Validating transform 'T1350_1ToU1' with validation bits 0x923
MSI (c) (48:98) [10:20:58:515]: Note: 1: 2749 2: T1350_1ToU1 3: C:\DOCUME~1\PMROZO~1\LOCALS~1\Temp\42edfdd.msp 4: 9.00.2412 5: 9.00.1720
MSI (c) (48:98) [10:20:58:515]: 1: 2749 2: T1350_1ToU1 3: C:\DOCUME~1\PMROZO~1\LOCALS~1\Temp\42edfdd.msp 4: 9.00.2412 5: 9.00.1720
MSI (c) (48:98) [10:20:58:515]: PATCH SEQUENCER: 2.0 minor upgrade patch C:\DOCUME~1\PMROZO~1\LOCALS~1\Temp\IXP000.TMP\VFP9.0sp1-KB906478-X86-Beta-Enu.msp is not applicable.
MSI (c) (48:98) [10:20:58:515]: SequencePatches returns success.
MSI (c) (48:98) [10:20:58:515]: Final Patch Application Order:
MSI (c) (48:98) [10:20:58:515]: Other Patches:
MSI (c) (48:98) [10:20:58:515]: Unknown\Absent: {A084F879-D79E-4D0C-84B8-D697A0C8D92D} - C:\DOCUME~1\PMROZO~1\LOCALS~1\Temp\IXP000.TMP\VFP9.0sp1-KB906478-X86-Beta-Enu.msp
The upgrade patch cannot be installed by the Windows Installer service because the program to be upgraded may be missing, or the upgrade patch may update a different version of the program. Verify that the program to be upgraded exists on your computer an
d that you have the correct upgrade patch.
c:\windows\Installer\5296d58.msi
MSI (c) (48:98) [10:20:58:546]: Product: Visual FoxPro 9.0 Professional - English - Update '{A084F879-D79E-4D0C-84B8-D697A0C8D92D}' could not be installed. Error code 1642. Additional information is available in the log file C:\DOCUME~1\PMROZO~1\LOCALS~1\Temp\MSIedfdc.LOG.