Upload in additional window error

Dear all,

i just wanna upload a file in FF (Ver 3.6.12) IDE Ver 1.0.10

click
link=Upload Dialog...
waitForPopUp
uploadWin
selectWindow
name=uploadWin

... now the error by

type
PDF-FILE
D:\\\\PDF\\Tongue_BobLea.pdf

Log:
[error] Unexpected Exception: code -> 1000, INDEX_SIZE_ERR -> 1, DOMSTRING_SIZE_ERR -> 2, HIERARCHY_REQUEST_ERR -> 3, WRONG_DOCUMENT_ERR -> 4, INVALID_CHARACTER_ERR -> 5, NO_DATA_ALLOWED_ERR -> 6, NO_MODIFICATION_ALLOWED_ERR -> 7, NOT_FOUND_ERR -> 8, NOT_SUPPORTED_ERR -> 9, INUSE_ATTRIBUTE_ERR -> 10, INVALID_STATE_ERR -> 11, SYNTAX_ERR -> 12, INVALID_MODIFICATION_ERR -> 13, NAMESPACE_ERR -> 14, INVALID_ACCESS_ERR -> 15, VALIDATION_ERR -> 16, TYPE_MISMATCH_ERR -> 17, message -> Security error, result -> 2152924136, name -> NS_ERROR_DOM_SECURITY_ERR, filename -> null, lineNumber -> 0, columnNumber -> 0, location -> native frame :: :: :: line 0, inner -> null, data -> null

I´am only using IDE. What can i do to solve this error?

Thank you
Jochen

No hint?