わかりました-イベントビューアが役に立ちました。おもう。
インストール中に一部の参照が見つからないようです。
これが最後の6つのエントリです...
Faulting application pa.exe, version 2.0.1.26594, stamp 496e0437, faulting module kernel32.dll, version 5.0.2195.6946, stamp 40d78cce, debug? 0, fault address 0x0002bbf3.
Detection of product '{3CA9D9FD-E8CD-4B73-8053-8C406ED8CB28}', feature 'DefaultFeature' failed during request for component '{ACA3C479-D7C7-902C-092A-E6635AD9A8B1}'
Detection of product '{3CA9D9FD-E8CD-4B73-8053-8C406ED8CB28}', feature 'DefaultFeature', component '{7D04E12E-2803-6F47-E11C-B8146C27E61B}' failed. The resource 'C:\Program Files\pa\pa-update.exe' does not exist.
Faulting application pa.exe, version 2.0.1.26594, stamp 496dffb9, faulting module kernel32.dll, version 5.0.2195.6946, stamp 40d78cce, debug? 0, fault address 0x0002bbf3.
Detection of product '{3CA9D9FD-E8CD-4B73-8053-8C406ED8CB28}', feature 'DefaultFeature' failed during request for component '{ACA3C479-D7C7-902C-092A-E6635AD9A8B1}'
Detection of product '{3CA9D9FD-E8CD-4B73-8053-8C406ED8CB28}', feature 'DefaultFeature', component '{30A51F7D-D0DA-E436-F48F-1092ECE7858D}' failed. The resource 'C:\Program Files\pa\pa-common.dll' does not exist.