In your Dashboard can you please go to Sitewide Settings > Debug and then copy everything from the Environment box?

If you can reply back with that info (this only tell us what C5 packages are installed and what PHP option etc are enabled - there is no private information there) and a list of which blocks you are having problems with, we might be able to help you a little more.

Also any screen grabs of the problems could also be helpful.

# concrete5 Version
5.4.1.1

# concrete5 Packages
Email List Signup (1.03), Login (1.1), Mail Monkey (1.1.4), Rigid Light - Theme (1.0), Who's Online (2.2).

# concrete5 Overrides
models/si_browser_update.php, themes/squarely, themes/loadfoov2, themes/cordobo_green_park_2

# Server Software
Apache

# Server API
apache

# PHP Version
5.2.11

# PHP Extensions
apache, bcmath, bz2, calendar, ctype, curl, date, dbase, dom, exif, fileinfo, filter, ftp, gd, gettext, hash, iconv, id3, imap, ionCube Loader, json, libxml, mailparse, mbstring, mcrypt, mhash, mime_magic, mssql, mysql, mysqli, odbc, openssl, pcre, pdf, PDO, pdo_mysql, pdo_sqlite, pspell, Reflection, session, SimpleXML, soap, SPL, SQLite, standard, tokenizer, wddx, xml, xmlreader, xmlrpc, xmlwriter, xsl, Zend Optimizer, zip, zlib.

# PHP Settings
log_errors_max_len - 1024
max_execution_time - 5
max_input_nesting_level - 64
max_input_time - -1
memory_limit - 65M
post_max_size - 30M
safe_mode - Off
safe_mode_exec_dir - <i>no value</i>
safe_mode_gid - Off
safe_mode_include_dir - <i>no value</i>
sql.safe_mode - Off
upload_max_filesize - 30M
mssql.max_links - Unlimited
mssql.max_persistent - Unlimited
mssql.max_procs - Unlimited
mssql.textlimit - Server default
mysql.max_links - Unlimited
mysql.max_persistent - Unlimited
mysqli.max_links - Unlimited
odbc.max_links - Unlimited
odbc.max_persistent - Unlimited
pcre.backtrack_limit - 100000
pcre.recursion_limit - 100000
session.cache_limiter - nocache
session.gc_maxlifetime - 7200
soap.wsdl_cache_limit - 5
safe_mode_allowed_env_vars - PHP_
safe_mode_protected_env_vars - LD_LIBRARY_PATH

All of the packages I am trying to install don't work, including that one theme which I installed from the marketplace.

I have attached a screenshot of the error. This error happens when installing all packages.

I've encountered similar errors in the past, and they can be misleading. The problem could be that your "/files" directory is not writable by the web server. Make sure it is, as per the C5 installation instructions.

-Steve

It is writeable. It has the permissions 777 which is fully writeable

Which addon are you trying to install

> It is writeable. It has the permissions 777 which is fully writeable

Cool. Just checking. Make sure those permissions have propagated to all subdirectories as well (like the cache directory, etc.)

-Steve