TYPO3 Core

I create a simple small page tree and exported this page tree as an *.t3d and a *.xml file. This step runs fine. But always a PHP warning displayed.

PHP Warning: sha1_file(C:/Daten/arbeit/www/typo3_62/): failed to open stream: No such file or directory in C:\Daten\arbeit\www\typo3_62\typo3\sysext\core\Classes\Resource\Driver\LocalDriver.php line 636

If I try to import this *.t3d file in the same TYPO3, I see the complete page tree in the preview. But if I try to import it, the import failed and some messages created like

0     Possible error: pages:148 had no new id assigned to it. This indicates that the record was not added to database during import. Please check changelog!
1     Possible error: sys_domain:3 had no new id assigned to it. This indicates that the record was not added to database during import. Please check changelog!
2     Possible error: tt_content:125 had no new id assigned to it. This indicates that the record was not added to database during import. Please check changelog!
3     Error: this records is NOT created it seems! (pages:148)
4     Error: this records is NOT created it seems! (sys_domain:3)
5     Error: this records is NOT created it seems! (tt_content:125)
6     Error: this records is NOT created it seems! (pages:148)
7     Error: this records is NOT created it seems! (sys_domain:3)
8     Error: this records is NOT created it seems! (tt_content:125)

The same happens with the *.xml import.

0     Possible error: pages:148 had no new id assigned to it. This indicates that the record was not added to database during import. Please check changelog!
1     Possible error: sys_domain:3 had no new id assigned to it. This indicates that the record was not added to database during import. Please check changelog!
2     Possible error: tt_content:125 had no new id assigned to it. This indicates that the record was not added to database during import. Please check changelog!
3     Error: this records is NOT created it seems! (pages:148)
4     Error: this records is NOT created it seems! (sys_domain:3)
5     Error: this records is NOT created it seems! (tt_content:125)
6     Error: this records is NOT created it seems! (pages:148)
7     Error: this records is NOT created it seems! (sys_domain:3)
8     Error: this records is NOT created it seems! (tt_content:125)