调用Adobe的axAcroPDF组件或者Webbrowser显示pdf档退出时发生内存错误

我使用axAcroPDF组件或者Webbrowser显示pdf档的时候都正常，可是在退出应用程序时，则会发生内存错误的问题，



Problem Event Name: APPCRASH Application Name: AcroRd32.exe Application Version: 10.0.1.434 Application Timestamp: 4d456f48 Fault Module Name: AcroRd32.dll Fault Module Version: 10.0.1.434 Fault Module Timestamp: 4d457cd0 Exception Code: c0000005 Exception Offset: 001af2ae OS Version: 6.1.7601.2.1.0.256.1 Locale ID: 3081 Additional Information 1: 0a9e Additional Information 2: 0a9e372d3b4ad19135b953a78882e789 Additional Information 3: 0a9e Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
后来发觉在Adobe Reader 9.1和9.2版会有这个问题
Adobe Reader 9.4和Adobe Reader7.0版本则没出现这个问题。可能是Adobe Reader版本的问题，其他版本没有具体去试过