Hi all,
Having trouble installing GO.db, seems to be a similar error to other problems reported on here in the past but I still can't see where the issue is. Everything required is up to date and installed as far as I can see. Here's the error:
> biocLite("GO.db")
BioC_mirror: https://bioconductor.org
Using Bioconductor 3.6 (BiocInstaller 1.28.0), R 3.4.3 (2017-11-30).
Installing package(s) ‘GO.db’
installing the source package ‘GO.db’
trying URL 'https://bioconductor.org/packages/3.6/data/annotation/src/contrib/GO.db_3.5.0.tar.gz'
Content type 'application/x-gzip' length 31663705 bytes (30.2 MB)
downloaded 30.2 MB
'\\cmvm.datastore.ed.ac.uk\cmvm\scs\users\s1795508'
CMD.EXE was started with the above path as the current directory.
UNC paths are not supported.  Defaulting to Windows directory.
* installing *source* package 'GO.db' ...
** R
** inst
** preparing package for lazy loading
** help
*** installing help indices
  converting help for package 'GO.db'
    finding HTML links ... done
    GOBASE                                  html  
    GOBPANCESTOR                            html  
    GOBPCHILDREN                            html  
    GOBPOFFSPRING                           html  
    GOBPPARENTS                             html  
    GOCCANCESTOR                            html  
    GOCCCHILDREN                            html  
    GOCCOFFSPRING                           html  
    GOCCPARENTS                             html  
    GOMAPCOUNTS                             html  
    GOMFANCESTOR                            html  
    GOMFCHILDREN                            html  
    GOMFOFFSPRING                           html  
    GOMFPARENTS                             html  
    GOOBSOLETE                              html  
    GOSYNONYM                               html  
    GOTERM                                  html  
    GO_dbconn                               html  
** building package indices
** testing if installed package can be loaded
*** arch - i386
Error: package or namespace load failed for 'GO.db':
 .onLoad failed in loadNamespace() for 'GO.db', details:
  call: dbFileConnect(dbfile)
  error: DB file '' not found
Error: loading failed
Execution halted
*** arch - x64
Error: package or namespace load failed for 'GO.db':
 .onLoad failed in loadNamespace() for 'GO.db', details:
  call: dbFileConnect(dbfile)
  error: DB file '' not found
Error: loading failed
Execution halted
ERROR: loading failed for 'i386', 'x64'
* removing '\\cmvm.datastore.ed.ac.uk/cmvm/scs/users/s1795508/R/win-library/3.4/GO.db'
In R CMD INSTALL
The downloaded source packages are in
‘C:\Users\s1795508\AppData\Local\Temp\Rtmpas4U9p\downloaded_packages’
Warning messages:
1: running command '"C:/PROGRA~1/R/R-34~1.3/bin/x64/R" CMD INSTALL -l "\\cmvm.datastore.ed.ac.uk\cmvm\scs\users\s1795508\R\win-library\3.4" C:\Users\s1795508\AppData\Local\Temp\Rtmpas4U9p/downloaded_packages/GO.db_3.5.0.tar.gz' had status 1 
2: In install.packages(pkgs = doing, lib = lib, ...) :
  installation of package ‘GO.db’ had non-zero exit status
And here's the session info:
> sessionInfo()
R version 3.4.3 (2017-11-30)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1
Matrix products: default
locale:
[1] LC_COLLATE=English_United Kingdom.1252  LC_CTYPE=English_United Kingdom.1252   
[3] LC_MONETARY=English_United Kingdom.1252 LC_NUMERIC=C                           
[5] LC_TIME=English_United Kingdom.1252    
attached base packages:
[1] stats4    parallel  stats     graphics  grDevices utils     datasets  methods   base     
other attached packages:
 [1] RMySQL_0.10.13         DBI_0.7                RSQLite_2.0            geneLenDataBase_1.14.0 BiasedUrn_1.07        
 [6] bit64_0.9-7            bit_1.1-12             graph_1.56.0           AnnotationDbi_1.40.0   IRanges_2.12.0        
[11] S4Vectors_0.16.0       Biobase_2.38.0         BiocInstaller_1.28.0   AnnotationHub_2.10.1   BiocGenerics_0.24.0   
loaded via a namespace (and not attached):
Error in x[["Version"]] : subscript out of bounds
In addition: Warning message:
In FUN(X[[i]], ...) :
  DESCRIPTION file of package 'GenomicRanges' is missing or broken
> library("GenomicRanges", lib.loc="\\\\cmvm.datastore.ed.ac.uk/cmvm/scs/users/s1795508/R/win-library/3.4")
Thanks for reading,
Matt

It seems that this issue is related to your environment and not GO.db or R. I'm not able to reproduce this error since it involves your computing environemnt, but as per this article: https://support.rstudio.com/hc/en-us/articles/203775903-Fixing-startup-error-where-manipulate-and-rstudio-packages-will-not-install-with-networked-drives , it appears that the library you are trying to install to is on a networked drive. The library you are trying to install to appears to be located on a UNF path, and R does not support these file paths. The referenced article may be able to help you, or further searches regarding the error :
May help you solve this issue.