Use of components SaveDialog and OpenDialog in DLL

Hello!

Who will prompt as to decide(solve) such problem at use in DLL of
components SaveDialog and OpenDialog in DLL, the call of procedure
xxxDialog. Execute results in exception with the message:

" Project callQuer.exe raised exception class EAccessViolation with
message ' Access violation at address
004A93B3 in module VKQUERY.DLL '. Read of address FFFFFFFF '. Process
stopped. Use Step or Run to
continue. "

May be, for use of these components in DLL any additional receptions are
required?

Thank! D.Pliev.