PB 15 window.resize() crashes when running application

during the open process a window is resized:

aw_win.move( li_Xpos, li_Ypos)

crashes PB 15 beta:

32 bit PB15; win 8.1 64 bit

Problem signature:

  Problem Event Name: APPCRASH

  Application Name: PB150.EXE

  Application Version: 15.0.0.1507

  Application Timestamp: 526e28c7

  Fault Module Name: PBVM150.dll

  Fault Module Version: 15.0.0.1507

  Fault Module Timestamp: 527a0203

  Exception Code: c0000005

  Exception Offset: 000e449a

  OS Version: 6.2.9200.2.0.0.256.48

  Locale ID: 1033

  Additional Information 1: b818

  Additional Information 2: b8185e63cf727723b6e6533ea69417bb

  Additional Information 3: 57eb

  Additional Information 4: 57eb779b458f624e7e854961b1592a01