[htaccess/server conf] edit forbidden after install

Hello everybody,
I’m quite new to web developing, I discovered Joomla and Flexicontent 3 months ago and I find them great ! Flexicontent is powerful, flexible and user-friendly, and the forum, along with numerous tutorials found here and there, has proved very helpful. However, after 2 months of local development on MAMP, when I started to work online, I ran into unexpected behavior : The install of Flexicontent was completed successfully, but newly created articles, categories or fields are not editable : the edit link triggers a 403 error ("not allowed to access /administrator/index.php on this server"). The frontend display of content is fine, and edit from the frontend is working too.
I have no idea of what I did wrong !

Here is my set up :
Joomla 2.5.14 (SEF and rewriting are disabled)
Flexicontent 2.1.0 r1720 with french translation
other extensions : JCE
PHP 5.4.6
Firefox 21

Many thanks in advance to anybody who might shed some light and/or understanding !
Corinne

Hello,

so in backend the problem is:
only in FLEXIcontent item form
or
it exists with other FLEXIcontent backend views too ?

Hello,
thank you for your quick answer !
Whether for item, category, field, author, every edit task from the back end (task=items.edit or category.edit or field.edit for example) gives the same 403 error. All the "view" tasks, however, work fine (the rest of the Joomla tasks, like menu items are OK too).
If I may risk a stupid remark, if I remove the brackets in the URL after the "cid", it works well and the edit page is displayed...
Thank you,
Corinne

Hello,

i think i need access to review this,

you can send me a PM with super admin login and site's URL

Regards

Hello

you are right if you change cid[]=nnn to cid=nnn the all edit forms work,

maybe some 3rd party plugin ... particular to you installation or some configuration particular to your installation

i will find time for this later today

Regards

That's very kind of you ! If you need any other information just let me know,
All the best,
Corinne