[TYPO3] Creation (Write) of an Extension - Error: "Warning: array_merge()...", "Database status: Table error!"

[Alexander Seidl]

Hi @ all,
im a intermediate learner of typo3. Thats why i tried to create an  
extension "Image Gallery" with the aid of a tutorial on this site  
<http://www.hachmeister.org/de/typo/tutorien/entwicklung/eigene-frontend-plugins-erstellen/>  
and with the aid of the "Extension Manager Kickstarter"-plugin at Version  
0.2.1. The tutorial explains all related topics very well and i got a  
feeling how everything works together. But when i try to "write" the  
extension, then i will get the following error message in the backend:

"Warning: array_merge() [function.array-merge]: Argument #1 is not an
array in
C:\Programme\xampp\xampp\htdocs\ehsy\typo3\ext\kickstarter\class.tx_kickstarter_sectionbase.php
on line 700

Warning: array_unique() [function.array-unique]: The argument should be an
array in
C:\Programme\xampp\xampp\htdocs\ehsy\typo3\ext\kickstarter\class.tx_kickstarter_sectionbase.php
on line 700

Warning: implode() [function.implode]: Bad arguments. in
C:\Programme\xampp\xampp\htdocs\ehsy\typo3\ext\kickstarter\class.tx_kickstarter_sectionbase.php
on line 700"

I had a look at this file in line 700.
But i can make nothing of it. Furthermore i get status information in the  
information section of the extension:

"Database status: Table error!
Probably one or more required fields/tables are missing in the database!
Errors: Some tables or fields are missing!

There seem to be problems with the "array_merge()"-Function of the class
"class.tx_kickstarter_sectionbase.php".

Apparently, there is a failed attempt to access some fields of the  
database. But this cannot be, because i checked the table in phpMyAdmin  
and voilà: there they are: The two fields "image" and "title". Besides,  
the "promised" entry fields for "Title" and "Image" in the  pagecontent  
element "Plugin: Image Gallery" dont exist. Whats wrong?

Does anyone have advice?

### DEBUG SYSTEM INFORMATION - START ###
HTTP_HOST           : localhost
TYPO3_HOST_ONLY     : localhost
TYPO3_PORT          :
PATH_INFO           :
QUERY_STRING        : TYPO3_INSTALL[type]=phpinfo
REQUEST_URI         :
/ehsy/typo3/install/index.php?TYPO3_INSTALL[type]=phpinfo
HTTP_REFERER        :
http://localhost/ehsy/typo3/install/index.php?TYPO3_INSTALL[type]=about
TYPO3_REQUEST_HOST  : http://localhost
TYPO3_REQUEST_URL   :
http://localhost/ehsy/typo3/install/index.php?TYPO3_INSTALL[type]=phpinfo
TYPO3_REQUEST_SCRIPT: http://localhost/ehsy/typo3/install/index.php
TYPO3_REQUEST_DIR   : http://localhost/ehsy/typo3/install/
TYPO3_SITE_URL      : http://localhost/ehsy/
TYPO3_SITE_SCRIPT   : typo3/install/index.php?TYPO3_INSTALL[type]=phpinfo
TYPO3_SSL           :
SCRIPT_NAME         : /ehsy/typo3/install/index.php
TYPO3_DOCUMENT_ROOT : C:/Programme/xampp/xampp/htdocs
SCRIPT_FILENAME     :
C:/Programme/xampp/xampp/htdocs/ehsy/typo3/install/index.php
REMOTE_ADDR         : 127.0.0.1
REMOTE_HOST         :
HTTP_USER_AGENT     : Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
de) Opera 8.54
HTTP_ACCEPT_LANGUAGE: de,en;q=0.9
CONST: PHP_OS       : WINNT
CONST: TYPO3_OS     : WIN
CONST: PATH_thisScri:
C:/Programme/xampp/xampp/htdocs/ehsy/typo3/install/index.php
CONST: php_sapi_name: apache2handler
OTHER: TYPO3_VERSION: 3.8.1
OTHER: PHP_VERSION  : 5.1.1
imagecreatefromgif(): 1
imagecreatefrompng(): 1
imagecreatefromjpeg(: 1
imagegif()          : 1
imagepng()          : 1
imagejpeg()         : 1
imagettftext()      : 1
OTHER: IMAGE_TYPES  : 15
OTHER: memory_limit :
SERVER: SERVER_PORT : 80
SERVER: SERVER_SOFTW: Apache/2.2.0 (Win32) DAV/2 mod_ssl/2.2.0
OpenSSL/0.9.8a mod_autoindex_color PHP/5.1.1
SERVER: GATEWAY_INTE: CGI/1.1
SERVER: SCRIPT_NAME : /ehsy/typo3/install/index.php
SERVER: PATH_TRANSLA:
T3CV_GFX: image_proc: 1
T3CV_GFX: gdlib     : 1
T3CV_GFX: gdlib_png : 0
T3CV_GFX: gdlib_2   : 0
T3CV_GFX: im        : 1
T3CV_GFX: im_path   : C:\Programme\xampp\imagemagick-win-4.2.9\ImageMagick\
T3CV_GFX: im_path_lz:
T3CV_GFX: im_version: 0
T3CV_GFX: im_negate_: 0
T3CV_GFX: im_imvMask: 0
T3CV_GFX: im_combine:
### DEBUG SYSTEM INFORMATION - END ###
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