[solved]Error uploading this file to the server - J!2.5

So I've tried installing
com_flexicontent_v2.0_RC3_r1151.zip
com_flexicontent_v2.0_RC4_r1216.zip
com_flexicontent_v2.0_RC4_r1235.zip

on a test site I just upgrade from Joomla 1.5.25 to 2.5.1 but they keep coming back with
"There was an error uploading this file to the server."

I've been able to install other plugins, so it's definitely these ones. I thought these were 2.5 ready?

did you try installation with tmp option ?

tmp option? Not sure what you mean by this, so I guess the answer is no i did not. How does one do this?

I figured out what you meant by tmp option... copying it to the tmp dir and installing from there. Yes com_flexicontent_v2.0_RC4_r1235 did work.

It's possible that the php file upload size was too small. Looks like it was still set to 2M.

However, the content is still missing (my site is blank) and it giving 2 Database problems. Are these anything I should be concerned with?

Database schema version (2.5.3-2012-03-13) does not match CMS version (2.5.4).
Table 'j25_languages' does not have column 'access'. (From file 2.5.4-2012-03-19.sql.)

Database schema version (in #__schemas): 2.5.3-2012-03-13.
Update version (in #__extensions): 2.5.4.
Database driver: mysqli.
62 database changes were checked successfully.
23 database changes did not alter table structure and were skipped.

the tmp :
-create a flexi folder in tmp
-unzip and upload com_flexicontent_v2.0_RC4_r1235.zip in flexi folder
-go to installation page
-add /flexi at end of this url
-install it
regards